CN110067744A - Hydraulic press, the hydraulic unit with hydraulic press and the hydraulic axis with hydraulic press - Google Patents
Hydraulic press, the hydraulic unit with hydraulic press and the hydraulic axis with hydraulic press Download PDFInfo
- Publication number
- CN110067744A CN110067744A CN201910053631.2A CN201910053631A CN110067744A CN 110067744 A CN110067744 A CN 110067744A CN 201910053631 A CN201910053631 A CN 201910053631A CN 110067744 A CN110067744 A CN 110067744A
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- CN
- China
- Prior art keywords
- hydraulic press
- heat
- hydraulic
- exchange device
- wall portion
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
- F03C1/0636—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
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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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
Abstract
Disclose a kind of hydraulic press with shell.Also disclose a kind of hydraulic unit for being respectively provided with hydraulic press and a kind of hydraulic axis.
Description
Technical field
The present invention relates to a kind of hydraulic press as described in the preamble according to claim 1, have according to claim 14
The hydraulic unit of the hydraulic press, and the hydraulic axis with hydraulic press according to claim 15.
Background technique
The core members of hydraulic circuit are hydraulic press, particularly hydraulic pump.It is converted mechanical energy by it by its conveying
The hydraulic energy, particularly hydrostatic pressure energy of pressure medium.In the case where being run as hydraulic motor, convert enterprising in the opposite direction
Row.Loss (Verluste) occurs in energy conversion, the loss especially leads to pressure medium in the case where hydraulic circuit
Heating (Erw rmung).Here, the loss occurred in hydraulic press is most of reason of pressure medium heating, smaller portion
Dividing is as caused by the flow loss in pipeline.The heating of pressure medium in hydraulic pump is especially big.
In traditional solution, the transported pressure medium of the thermal energy accumulated in hydraulic pump due to loss is brought into
Into hydraulic circuit, until it is discharged to coolant as heat by external heat exchanger.Here, thermal energy is assigned to greatly
Oil volume (lvolumen) on, need to recycle a large amount of pressure medium thus heat is discharged.Due to a large amount of pressure medium,
However the T for coolant cooling again is also relatively small, so that the efficiency of external heat exchanger is small and its heat exchange
Face must be larger, this makes investment and operating cost be kept as height.
Cooling can be carried out for example by external bundled tube or heat-exchangers of the plate type.Coolant is, for example, water.Described
In two kinds of heat exchangers, there are the risks that water enters hydraulic oil, because of oil and cooling water in the case where tube-bundle heat exchanger
Side only passes through sealing element and is only separated in the case of a plate heat exchanger by thin brazing layer.Two sealing elements all may
The loss (Verschlei) due to caused by operation and fail, and thus since the water entered in hydraulic oil injures liquid
Press and by its supply component and process operational reliability.
Document DE 94 11 163 U1, JPH 08 22 64 12 and DE 27 03 686 respectively illustrates a kind of solution party
Case, wherein being cooled down by with the enclosure interior space of pressure medium flushing liquor press pump.It is arranged in this way from hydraulic pump
Pressure medium out is cooled down in the heat exchanger individually arranged using water again.Here, pressure medium amount to be recycled is also big
's.Further, it is necessary to enduringly feed the amount flushed out again, this can bring the consuming in terms of device technique therewith.
Document CN 106 224 228 illustrates that a kind of hydraulic pump, shell are wrapped up by heat pipe.By being cooled down again by water-bath
The medium of heat pipe is discharged to carry out final heat.The shortcomings that solution, is for example that heat pipe is exposed to liquid due to its outside
Press pump and be subjected to by impact caused by damage.
10 2,012 000 986 B3 of document DE illustrates relevant solution, and where it is proposed one kind for hydraulic
The coolant jacket of pump.It is a disadvantage here that this cooling nested structure may require that sizable construction space.
Summary of the invention
Correspondingly, the object of the present invention is to provide a kind of hydraulic press with more efficient cooling, with hydraulic press
Hydraulic unit and hydraulic axis with hydraulic press.
First purpose is solved by the hydraulic press of the feature with claim 1, and second purpose passes through with right
It is required that the hydraulic unit of 14 feature solves, and the hydraulic axis solution that third purpose passes through the feature with claim 15
Certainly.
It is described in each dependent claims and of the invention is advantageously improved scheme.
Hydraulic press have shell and arrangement on the housing for hydraulic power conversion with pressure medium percolation
Transmission device (Triebwerk).Hydraulic press operation when, in hydraulic press, particularly in transmission device pressure medium due to
Friction and possible other are lost and heating.According to the present invention, extend in the wall portion of shell for cooling heat-exchange device.
Particularly, carry out from the component being rotatably disposed in shell by heat radiation proceed to heat-exchange device heat transmitting with/
As long as or leakage volume stream is directed in enclosure interior space from transmission device, can be carried out from turbulent flow empty inside housings
Between middle eddy flow pressure medium by heat transfer (W rmedurchgang) to heat-exchange device heat transmitting.
By making heat-exchange device be arranged to so can be used for heat exchange close to by the heating position determined is lost
T is also high.No matter now by heat radiation or pass through heat transfer as a result, or by two methods, heat transmitting is all special
It is not effective.Therefore, small heat-exchange surface of the heat-exchange device in wall portion be just enough.
The wall portion of shell is provided for accommodating heat-exchange device, because shell natively there must be so that protect and support can
The component of rotation.It, must compared with traditional wall portion of not heat-exchange device in order to which heat-exchange device to be arranged in wall portion
It only must slightly be widened.Therefore, although being arranged in the heat-exchange device in wall portion, hydraulic press is still configured to small.
In a kind of preferred improvement project, transmission device has and can rotatably be arranged, especially around rotation axis
It is the one group of hydrostatic working space supported.The working space can when rotated alternately with hydraulic press and
The high-voltage section of especially hydraulic pump is connected with low voltage section, especially can with the terminal corresponding to corresponding pressure of hydraulic press into
Row connection.
Preferably, hydrostatic working space is limited by the hydrostatic cylinder-piston unit of hydraulic press respectively.
Preferably, hydraulic press is axial piston machine (Axialkolbenmaschine), and cylinder body is by constructing rotatable
Cylinder barrel in cylinder holes formed.Piston is axially displaceably disposed in the cylinder holes.In this case, heat especially from
(ausgehen) is come out in cylinder barrel and piston.
Preferably, axial piston machine is configured to swash plate structural form, wherein piston shell be fixedly arranged or can
It slidably, is i.e. supported in the case where sliding friction on the swash plate being pivotally supported.Alternatively, inclined shaft structural form is
It is feasible, wherein piston head anti-torsion and can pivotally, i.e. in the case where sliding friction with relative to rotation axis install
Driving axis connection.In both cases, heat also comes out from the matching piece of tribology.
In a kind of improvement project, wall portion is formed by the set section of shell, which, which especially at least partly surrounds, turns
Moving axis or described group of encirclement.
In a kind of improvement project of substitution, wall portion is by the inner sleeve section of shell and by abutting outside thereon on the outside
Section is formed, which especially at least partly surrounds rotation axis or surround described group, heat-exchange device at least portion
Ground is divided to extend in the outer sections.In this case, therefore the wall portion is divided into the section and outside with set
Side is adjacent, disposes or fasten outer sections thereon, and the section with set only has the function of coating enclosure interior space,
The outer sections meet the function of heat exchange.
In the case where the wall portion of division, in a kind of modification, at least one channel of heat-exchange device (is wherein disposed with
For absorbing the fluid of heat) it is milled into the inner sleeve face of outer sections and is covered by sealing surface.Sealing surface especially fluid is close
It closes and is closed with flushing with the inside face of outer sections in feud.For example, sealing surface is the circumferential surface of inner sleeve face section.
In the case where the wall portion of division, in another modification, the inner wall of outer sections is in heat-exchange device and inner sleeve
Between section.
Outer sections can be structured as plate.Here, one or more plates can be placed in one on inner sleeve section
Or on multiple sides.
Alternatively, outer sections may be constructed such that shell-like and surround inner sleeve section.
In a kind of improvement project, the set section or inner sleeve section of shell are at least partly configured to cylindricality or cylindricality arch
Rise or taper.Particularly, it surrounds above-mentioned rotation axis and/or cylindrical or cylindricality arches upward or the group of the form of taper.
In a kind of improvement project, the exterior face of shell, especially set section or the exterior face of outer sections have at least
One planar section.In this way it is possible to by attachment, for example be used to transmit torque to the driving machine of hydraulic press, or use
It is fastened on shell in a simple manner in the pressure medium container for compactly constructing hydraulic unit or hydraulic axis.
In a kind of improvement project, the wall portion has the inner sleeve face for being directed toward the enclosure interior space, the inner sleeve face
Circular cross section is especially at least partially in the plane that above-mentioned rotary shaft is fallen on as vertical line.
In a kind of improvement project, inner sleeve face, especially in the side of rotation axis upwardly and around its at least partly column
Extend to shape.Here, the inner sleeve face can alternatively or additionally have taper or oval section, to promote example
Such as the eddy flow and/or promotion radiation absorption of leakage volume or leakage volume stream turbulent flow.
In a kind of improvement project, heat-exchange device be configured to annular, particularly circular ring shape or polygon,
Especially quadrangle or hexagon or octagon.The foreign steamer of the shape being previously mentioned in particular to profile, particularly heat-exchange device
It is wide and/or Internal periphery to the projection in such as lower plane, above mentioned rotation axis is fallen in the plane as vertical line.
In a kind of improvement project, heat-exchange device cylindricality or convex extend with arching upward cylindricality.
In a kind of modification, the wall portion of heat-exchange device is formed from tubes.Particularly, at least its walking in the wall portion of shell
Gesture, cross section, wall portion thickness and/or material are according at least to the warm and/or pressure medium to be passed according to regulation according to rule
Fixed temperature designs.
In a kind of improvement project, by pipe, particularly steel pipe casting (eingiessen) into the wall portion of shell.
Alternatively, (giessen) heat-exchange device and wall portion are cast.For this purpose, a channel or more of heat-exchange device
A channel is manufactured when casting the wall portion by means of casting core, particularly by means of sand core.
Another alternative solution for manufacture is to be manufactured by means of the 3D metallic print of addition property with cooling device
A channel or multiple channels wall portion.
In a kind of modification, heat-exchange device is by the annular space, particularly cylindrical annular space that extend in wall portion
It is formed.In a kind of alternative modification, heat-exchange device is by the channel with channel intersected with each other that extends in wall portion
Network is formed.Channel can for example be intersected with right angle, acute angle/obtuse angle or general shape (rautig).
Preferably, in heat-exchange device, fluid is arranged with single-phase or two-phase, especially with free convection or forced convertion
The mode of flowing is arranged.
If heat-exchange device is at least partly spirally in a kind of improvement project, especially around above-mentioned rotation axis
Spirally extend, then the structural form that gives the simple of the heat-exchange device and can inexpensively manufacture.Here, along cold
But the conveyor screw on the side with enclosure interior space on the side of agent forms the specific temperature song for corresponding to the structural form
Line.
In order to obtain different specific temperature curves, in a kind of alternative improvement project, heat-exchange device at least portion
With dividing ground ripple (ondulierend), it is upwardly extended especially around above-mentioned rotation axis and in the side of above-mentioned rotation axis.?
This, for example, be predominantly parallel to rotation axis or along rotation axis direction extend section with mainly circumferentially around rotation axis extend
Section alternating.
In order to especially be to provide bigger heat-exchange surface, heat-exchange device is in a kind of improvement project, especially in radial direction
In on the direction of above-mentioned rotation axis at least two or more layers extension.
Be readily able to manufacture improvement project in, the first layer in the layer radially-inwardly, especially in above-mentioned rotation
On the direction of axis, the vertex of first layer is extended up to, there radially outward at least one pipe diameter of heat-exchange device
Amount is that amplitude guides and returns to extension in opposite direction with the vertex of the second layer.
Heat-exchange device can be partially or completely extended especially around above-mentioned rotation axis.
In a kind of improvement project of hydraulic press, heat-exchange device at least partly extends in casing section, the shell
Section due to the mating member of the tribology of hydraulic press friction and by thermic load.Particularly, this can be casing section, hydraulic
The drive shaft of machine is rotatably supported in the casing section.In the case where axial piston machine, they are, for example, shell bottom
The connection cover of portion and/or shell, the connection cover carry high pressure and low-voltage terminal.
Particularly, it in a kind of improvement project of hydraulic press, if the hydraulic press is designed as axial poiston pump, proves
It is advantageously possible to wall portion be especially amplified with the inner sleeve face of the leak pressure media contact of transmission device, particularly rib
Shape or roughening etc..In this way, heat is improved to transmit and improve cooling power.
Hydraulic unit has the hydraulic press constructed according at least one aspect of foregoing description.Here, at least fixedly with
The connection of hydraulic press, especially its shell has: driving machine, especially motor can be transmitted torque to hydraulic by the motor
Machine and pressure medium container, the pressure medium container can be connect with the low voltage section of hydraulic press and/or high-voltage section.According to hydraulic
Pressure medium container can be designed as open tank (open loop) or pressure equalisation container (closed circuit) by the design in circuit,
Hydraulic press can integrate (einbinden) into the hydraulic circuit.
This unit is for example arranged for hydraulic cylinder supply pressure medium.
It can especially be permanently connected with its shell in a kind of improvement project with hydraulic press.
Hydraulic axis has the hydraulic press constructed according at least one aspect of foregoing description.Herein at least fixedly with it is hydraulic
The connection of machine, especially its shell has: driving machine, especially motor can transmit torque to hydraulic press, energy by the motor
Enough hydraulic cylinders and control block, particularly valve control block by hydraulic press supply pressure medium, for controlling pressure medium supply.Separately
Outside, as already mentioned above, the tank that can be connect with the low voltage section of hydraulic press and/or high-voltage section or pressure can be set
Media Containers.
It is provided with cooling circuit in a kind of improvement project of unit or axis, it is cold that the heat-exchange device of hydraulic press is integrated into this
But in circuit.
It is in a kind of improvement project of unit or axis that additional heat-exchange device-is in parallel with the heat-exchange device of hydraulic press
Or in series-be integrated into cooling circuit, pass through its driving machine, particularly the inverter of motor, power supply (Netzteile)
And/or electric device (Elektrik) and/or motor itself can be cooled down.
When arranged in series, it was demonstrated that advantageously, the coolant of the heat-exchange device of the hydraulic press with coolant entrance
Reflux portion or outlet form the coolant entrance of additional heat-exchange device, because of driving machine, especially the inverter of motor,
Power supply and/or electric device and/or motor itself have maximum temperature more higher than hydraulic press.Therefore, in each heat exchange
There are enough T for using on device, and the efficiency of heat transmitting is good.In the differential concatenation connection (benefit of heat-exchange device
The backflow volume stream of the heat-exchange device of the component of electricity consumption realizes the cooling of hydraulic press) in, it hot side (hydraulic press) and flows into
T between coolant reduces, and cooling efficiency reduces.
Detailed description of the invention
Hydraulic press according to the present invention and its heat-exchange device multiple embodiments are shown in the attached drawings.With reference to these
The present invention will be explained in further detail in attached drawing now.
In figure:
Fig. 1 shows the hydrostatic axial poiston pump according to first embodiment in swash plate structural form with longitudinal section；
Fig. 2 shows the hydrostatic axial poiston pump according to the second embodiment in swash plate structural form with longitudinal section；
Fig. 3 to Fig. 5 is illustrated with longitudinal view and overlooking according to the heat-exchange device of third to the 5th embodiment respectively；
Fig. 6 and 7 shows the heat-exchange device according to the 6th and the 7th embodiment respectively with expanded view and cross section, and
Fig. 8 to 10 shows the heat-exchange device according to the 8th to the tenth embodiment respectively with expanded view and longitudinal section.
Specific embodiment
According to Fig. 1, the first embodiment for being designed as the hydraulic press of hydrostatic axial poiston pump 1 has shell 2, the shell
On the one hand the valve jacket 4 of outer profile with annular or rectangle, the valve jacket cover (Durchtriebdeckel) 6 by perforation on end side
It closes and is on the other hand closed by connection cover 8.In shell 2, drive shaft 14 is rotationally obtained by rolling bearing 10,12
Bearing.Anti-torsion ground cylinder barrel 16 is connect with drive shaft 14, round by multiple cylinder holes along the part being disposed concentrically upon with rotation axis 18
21, which are parallel to rotation axis 18, is introduced into the cylinder barrel.In corresponding cylinder holes 21, hydrostatic working piston 20 can be moved axially
It is guided and is slidably supported on the swash plate 22 being fixedly placed in shell 2 in 6 side of case lid dynamicly.Pass through cylinder
Hole 21 and working piston 20 limit hydrostatic working space respectively.In the region of connection cover 8, in cylinder barrel 16 and connection cover 8
Between be disposed with by perforation recess (pressure kidney (Drucknieren) is not shown) pass through (druchsetzen) control panel 24.
Perforation recess is in during pressure medium connect with the HV Terminal 26 of connection cover 8 and low-voltage terminal 28 at this.
In the rotation of drive shaft 14 and the thus rotation of cylinder barrel 16, hydrostatic working space passes through them and is directed toward terminals
26,28 port (not shown) is alternately connect with high-voltage section and low voltage section.
Enclosure interior space 30 is configured in shell 2.Ring is radially configured between cylinder barrel 16 and inner walls 32
Shape space 34.Heat-exchange device 36 extends along the direction of rotation axis 18 and circumferentially about rotation axis in the wall portion of valve jacket 4
Extend.This channel 37 with multiple circular ring shapes, with for thermal energy to be discharged from enclosure interior space 30, the circular ring shape leads to
Road is extended concentrically about around rotation axis 18.Therefore, heat-exchange device 36 has substantially cylindrical basic configuration.Circular ring shape leads to
Road 37 connect in the apex lines of cylindrical basic configuration with coolant entrance and in the apex lines diagonally arranged with it is cold
But agent reflux portion (being both not shown) connects.In this way, coolant (water) can be flowed into logical by coolant entrance
In road 37, coolant flows from supporting leg of the apex lines far from extension at two, up to coolant outlet and herein from shell
(aufnehmen) heat is absorbed in inner space 30, and is then flowed out again from shell 2 by coolant reflux portion.Institute as above
It states, in hydraulic circuit there is the thermogenetic point of highest to be generally in hydrostatic axial poiston pump 1.By being arranged in valve jacket 4
Wall portion in heat-exchange device 36 make thermal energy be in close proximity to the point and be transmitted to and flow coolant in channel 37, example
In water.Δ T as a result, herein is very high, and heat transfer coefficient α is equally very high.It is possible thereby to be uploaded in small heat-exchange surface
Pass a large amount of heat.As a result, eliminating the significantly larger heat exchanger that must be provided in outside.In this way, both may be used
With cost of reducing investment outlay, and operating cost can be saved.In addition, direct on hydrostatic axial poiston pump 1 is determined by temperature
Loss phenomenon can be minimized because they can always run within the scope of best temperature.
It, can well further since heat is passed in " the most hot position " of hydrostatic circuit in this way
Using the thermal energy being discharged by cooling water, because especially their temperature levels are much higher than environment temperature.In this way, such as
It secondary can be supplied to hot water and heat is provided.This can for example be realized by three path lines, wherein cold in heat-exchange device 36
But water circulation is until reaching enough Δ T.
Since external heat exchanger may be eliminated, also save it is being further mentioned above, based on bundled tube
The error source of the relatively susceptible technology of heat exchanger or heat-exchangers of the plate type.
Here, saving the basic structure and basic role that the hydrostatic axial piston machine 1 according to Fig. 1 is described in more detail
Mode and following embodiment, because these are fully known in the prior art.The advantages of being previously mentioned is also applied for following
Embodiment.
Fig. 2 shows hydrostatic axial poiston pumps 101 according to the second embodiment.With the first embodiment according to Fig. 1
The difference is that heat-exchange device 136 is different from according to the heat-exchange device of Fig. 1.
In the first embodiment, (verliefern) is provided to port annular around rotation axis 18, so that heat according to fig. 2
The channel 137 and 139 that there are exchanger assembly 136 multiple substantially (rautig) to intersect, for clarity, wherein in Fig. 2 only
There are four be respectively equipped with appended drawing reference.
These channels form channel network, and the basic configuration which is arched upward with cylindricality convex is prolonged around rotation axis 18
It stretches.
Channel 137 and 139 each leads into the coolant entrance 38 for being configured to circular passage using their end section
In the coolant reflux portion 40 of heat-exchange device 136.
According to Fig. 1；2 axial poiston pump 1；101 can be designed to two different configurations: with leakage or No leakage.
In the previous case, by the matching piece-of tribology (tribologisch) its especially by working piston 20 and cylinder holes 21,
The sliding block (not shown) of working piston 20 and swash plate 22 composition mating member-friction and heating pressure medium by leakage seam
Gap is discharged in enclosure interior space 30.It is situated between by the leak pressure that atwirl cylinder barrel 16 there to converge there
Matter is placed in the flowing of turbulent flow.As a result, 32 from pressure medium to inner walls, and therefore it is transmitted to heat-exchange device 36；136
Heat transfer coefficient α it is all good.
In the latter case, in the case where " dry type " axial poiston pump, the heat generated at tribology critical point is logical
It crosses heat radiation and is transmitted to wall portion 4；104, and thus it is transmitted to heat-exchange device 36；136.
Fig. 3 to 5 is schematically respectively along rotation axis 18 and in the wall portion 4 that its view shows shell 2
Heat-exchange device 236；336；436 third to the 5th embodiment.
According to Fig. 3 a and 3b, heat-exchange device 236 is in spiral shell on the direction of rotation axis 18 and circumferentially about rotation axis
The form of rotation is from the other end section that the coolant entrance 38 in an end section of conveyor screw extends to the conveyor screw
Coolant reflux portion 40.
According to Fig. 4 a and 4b, heat-exchange device 336 is on the direction of rotation axis 18 and circumferentially about rotation axis in tool
There is the form of the stagewise spiral of rectangular cross section to extend to this from the coolant entrance 38 in an end section of conveyor screw
Coolant reflux portion 40 on the other end section of conveyor screw.
According to Fig. 5 a and 5b, heat-exchange device 436 is upwardly extended in the side of rotation axis 18, and circumferentially about rotation axis
Extend in the form of ripple (ondulierend).Here, ring from be alternately parallel to rotation axis 18 extend axial section and week
The section being bent upwards is in a row each other so that the pipe of heat-exchange device 436 in circumferential direction and axial direction alternately about
Rotation axis 18 extends.Coolant entrance 38 and reflux portion 40 are collectively arranged in rotation axis 18 herein and put down as what vertical line was fallen on
In face.
Different from the embodiment of Fig. 3 to 5, Fig. 6 and 7 is shown in such embodiment, wherein wall portion 4 and heat-exchange device
536；636 and entrance 38 and reflux portion 40 be configured to pure casting, that is to say, that be not by steel pipe in the fabrication process but will
Form heat-exchange device 536；636 casting core (sand core) carries out encirclement casting (umgiessen).
According to the heat-exchange device 536 of Fig. 6 in the form of the channel network with channel intersected with each other, and according to figure
7 heat-exchange device 636 is formed as the cavity of annular cylindrical.
There is common point according to the embodiment of Fig. 8 to 10, i.e., the wall portion of shell is at least in heat-exchange device 736；836；936
Region in formed by the inner sleeve section 4a around rotation axis 18 of shell 2, and by the one or more adjacent on the outside of shell
The outer sections 4b connect on it is formed, heat-exchange device 736；836；936 extend in the outer sections.
Outer sections 4b can be formed as individual plate.According to Fig. 8, heat-exchange device 836 is milled as outer sections 4b
Inner sleeve face in angle bending slot 44, and drill out entrance 38 and reflux portion 40.It is important in this that just to the slot 44
True sealing, this passes through sealing surface 42 in an illustrated embodiment and carries out.This can be for example by the way that outer sections 4b to be adhered to
It is formed on inner sleeve section 4a.
Fig. 9 and 10 shows such embodiment, and wherein outer sections 4b is not limited by sealing surface 42, but by interior
The limitation of wall 46 is until set section 4a.Extended in a manner of rounding bending according to the heat-exchange device 836 of Fig. 9, according to the heat of Figure 10
Switch 936 extends in the form of the channel network with channel intersected with each other.Heat-exchange device 836；936, including enter
Mouth 38 and reflux portion 40 are introduced in outer sections 4b as casting core.
Fig. 6 to 10 respectively illustrates the embodiment of the circumferential cross-section of half set of the expansion as cylinder body.Here, 38 He of entrance
The port in reflux portion 40 diagonally arrange by (diametral) and axially spaced-apart, so that coolant must be in heat-exchange device 536；
636；Pass through longest path in 936.
A kind of hydraulic press with shell is disclosed, is disposed with transmission device in shell, the transmission device can be passed through
Hydraulic energy is converted mechanical energy into, and/or vice versa.Here, heat-exchange device at least partly prolongs in the wall portion of shell
It stretches for hot-fluid to be discharged.
Furthermore there is disclosed a kind of hydraulic unit for being respectively provided with hydraulic press and hydraulic axis.
Claims (15)
1. hydraulic press, the hydraulic press has the transmission for hydraulic power conversion of shell (2) and arrangement on the housing
Device (16,18,20,21), which is characterized in that heat-exchange device (36；136；236；336；436；536；636；736；836；
936) at least partly in the wall portion (4 of the shell (2)；104；Extend in 4b).
2. hydraulic press according to claim 1, the hydraulic press has and can surround rotation axis in the shell (2)
(18) the one group of hydrostatic working space (21) rotatably arranged, the working space can be in described group of rotations alternately
With hydraulic press (1；101) high-voltage section (26) and low voltage section (28) connection.
3. hydraulic press according to claim 1 or 2, wherein the wall portion (2) by the shell (2) set section (4；
104) it is formed, or wherein, the wall portion (2) is by the inner sleeve section (4a) of the shell (2) and by abutting against it on the outside
On outer sections (4b) formation, the heat-exchange device (736；836；936) at least partly prolong in the outer sections
It stretches.
4. hydraulic press according to claim 3, wherein the set section (4；104) be at least partly configured to cylindricality or
Taper arches upward.
5. hydraulic press according to any one of the preceding claims, wherein the circumferential surface of the shell (2) has rectangle
Cross section.
6. hydraulic press according to any one of the preceding claims, wherein the wall portion has such inner sleeve face (32),
The inner sleeve face is at least partially circular cross section.
7. hydraulic press according to any one of the preceding claims, wherein the heat-exchange device (36；136；236；
336；436；536；636；736；836；936) there is cylindrical basic configuration, be especially configured to Polygonal column shape or cylinder
Shape.
8. hydraulic press according to any one of the preceding claims, wherein the heat-exchange device (236；336；436) extremely
Partially being formed by pipe, particularly steel pipe, the pipe is cast in the wall portion, and/or, wherein the wall portion (4) is extremely
Partially with the heat-exchange device (36；136；536；636) it is casting together, and/or, wherein the wall portion is by means of 3D
Printing at least partly manufactures together with the heat-exchange device.
9. hydraulic press according to any one of the preceding claims, wherein the heat-exchange device in the wall portion (4)
(636) it is formed by annular space, particularly cylindrical annular space, or wherein, the heat-exchange device in the wall portion (4)
(136；536) it is formed by the channel network with channel intersected with each other.
10. hydraulic press according to any one of the preceding claims, wherein the heat-exchange device (236；336) at least
Partly helically or spiral extend.
11. hydraulic press according to any one of the preceding claims, wherein the heat-exchange device (436；736；836)
At least partly ripple or bendingly extend.
12. hydraulic press according to any one of the preceding claims, wherein the heat-exchange device is at least partly at this
Extend in the casing section of sample, the casing section due to the mating member of the tribology of hydraulic press friction and by thermic load.
13. hydraulic press according to any one of the preceding claims, wherein the inner sleeve face of the wall portion is amplified, especially
Rib shape or roughening etc., for simple structured thermal transfer or for improving cooling power, the inner sleeve face especially can be with institute
State the leak pressure media contact of transmission device.
14. have described in any one of preceding claims come the hydraulic unit of the hydraulic press constructed, wherein at least fixedly with
The hydraulic press connection has: driving machine, particularly motor can be transmitted torque on hydraulic press by the motor, with
And pressure medium container, the pressure medium container can be connect with the low voltage section of the hydraulic press and/or high-voltage section.
15. have any one of claims 1 to 13 described in come the hydraulic axis of the hydraulic press constructed, wherein at least fixedly with institute
State having for hydraulic press connection: driving machine, particularly motor can be transmitted torque on hydraulic press by the motor, can
By the hydraulic cylinder and control block, particularly valve control block of the hydraulic press supply pressure medium, for controlling pressure medium
Supply.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018200930.9A DE102018200930A1 (en) | 2018-01-22 | 2018-01-22 | Hydraulic machine, hydraulic unit with the hydraulic machine, and hydraulic axis with the hydraulic machine |
| DE102018200930.9 | 2018-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110067744A true CN110067744A (en) | 2019-07-30 |
| CN110067744B CN110067744B (en) | 2023-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910053631.2A Active CN110067744B (en) | 2018-01-22 | 2019-01-21 | Hydraulic machine, hydraulic unit with hydraulic machine and hydraulic shaft with hydraulic machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110067744B (en) |
| DE (1) | DE102018200930A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021202489A1 (en) * | 2021-03-15 | 2022-09-15 | Robert Bosch Gesellschaft mit beschränkter Haftung | Cooling module for a hydraulic machine, hydraulic machine with it, and hydraulic unit |
| DE102021209515A1 (en) * | 2021-08-31 | 2023-03-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hydrostatic axial piston machine with a cooling circuit and servo-hydraulic actuator with a hydrostatic axial piston machine and with a cooling circuit |
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Also Published As
| Publication number | Publication date |
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| DE102018200930A1 (en) | 2019-07-25 |
| CN110067744B (en) | 2023-07-28 |
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