CN103511242B - The piston machine of hydrostatic - Google Patents
The piston machine of hydrostatic Download PDFInfo
- Publication number
- CN103511242B CN103511242B CN201310232920.1A CN201310232920A CN103511242B CN 103511242 B CN103511242 B CN 103511242B CN 201310232920 A CN201310232920 A CN 201310232920A CN 103511242 B CN103511242 B CN 103511242B
- Authority
- CN
- China
- Prior art keywords
- hydrostatic
- piston
- piston machine
- cylindrical
- cylindrical hole
- 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.)
- Expired - Fee Related
Links
- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000003973 paint Substances 0.000 claims description 14
- 239000000314 lubricant Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000001010 compromised effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- F04B1/2014—Details or component parts
- F04B1/2035—Cylinder barrels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Details Of Reciprocating Pumps (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The present invention relates to a kind of axial piston machines of hydrostatic with cylindrical drum, and one or more cylindrical holes are configured in the cylindrical drum, can be along the piston axially movable driven wherein being disposed in the cylindrical hole.The layer made of the material for reducing friction is coated on the wall of the cylindrical hole.
Description
Technical field
The present invention relates to a kind of piston machines of hydrostatic with cylindrical drum, are configured with one in the cylindrical drum
A or multiple cylindrical holes, can be along the piston axially movable driven wherein being disposed in the cylindrical hole.The present invention
More particularly to a kind of axial piston machine of hydrostatic.
Summary of the invention
The task of the present invention is propose a kind of piston machine for starting and being previously mentioned the hydrostatic of type, the piston equipment
The efficiency being improved.
The task solves in the following manner according to the present invention: the material by reducing friction is coated on the wall of the cylindrical hole
Layer made of expecting.
By this configuration, not only realize the piston cylindrical shell surface and the cylindrical hole wall it
Between friction reduction, and also achieve the lasting reduction of the gap size and then realize the cylindrical of the piston
The reduction of leakage flow between shell surface and the wall of the cylindrical hole.
The layer for reducing friction also results in abrasion and reduces, and is thus kept as the gap size smaller and by institute
State piston machine efficiency be kept as it is higher.
In addition, being kept as smaller by the gap size in the following way and being kept as the efficiency of the piston machine
Higher: the abrasion for reducing the layer of friction enduringly causes the axial end portion of the layer to degrade (Abtrag), and the layer is in
It is not worn as far as possible in portion region.The gap size in central region is kept as smaller as a result,.
The solid lubricant particle for helping to reduce friction can be merged into the layer for reducing friction.
The layer made of the material reducing friction can give up the reduction abrasion of other valuableness measures, such as
The face slided relative to each other is hardened.
Low-cost cylindrical drum material can also be used, such as agglomerated material, thus, it is possible in product improvement
Freedom degree in extension design.
The layer made of the material of low friction also results in the lesser starting torque due to caused by coating
(Losbrechmoment) starting characteristic of optimization.
The material for reducing friction can be dry lube, especially sliding paint (Gleitlack), can be with letter
Single mode passes through dipping (Tauchen) or injection such as to coat.
If the layer made of the material for reducing friction with about the cylindrical hole wall and the piston it is cylindrical outer
Certain Interference size in the gap between shell surface is coated on the wall of the cylindrical hole, and the material for reducing friction is convex
The material of part can be degraded from the material for reducing friction by importing piston out, then just optimally realizing
Lesser gap between piston and cylindrical hole.
The piston machine of the hydrostatic can be a kind of axial piston machine of hydrostatic, especially a kind of clino-axis type machine
Device or a kind of inclined disc type machine.
Detailed description of the invention
Embodiment the invention is shown in the accompanying drawings and followed by detailed description.Attached drawing is shown:
Fig. 1 is the profilograph of the axial piston machine of hydrostatic；
Fig. 2 be interception section of the axial piston machine of hydrostatic in cylindricality bore region, non-according to the present invention the
The profilograph of one embodiment；
Fig. 3 be interception section of the axial piston machine of hydrostatic in cylindricality bore region, non-according to the present invention the
The profilograph of two embodiments；
Fig. 4 shows interception section, basis according to the axial piston machine of the hydrostatic of Fig. 1 in cylindricality bore region
The profilograph of the embodiment of the present invention.
Specific embodiment
Axial piston machine shown in FIG. 1 has drive shaft 1, and the drive shaft can be turned by two rolling bearings 2 and 3
It supports dynamicly in the housing.The drive shaft 1 has the first shaft part, and first shaft part is radially surrounded by cylindrical drum 4.
Second shaft part has outer toothed portion region 5, and the cylindricality rolling with interior teeth portion hole 6 is disposed on the outer toothed portion region
Cylinder 4.By the tooth shaft interconnecting piece, the cylindrical drum 4 can rotationally be driven by the drive shaft 1 rotatably driven.
The cylindrical drum 4 has multiple cylindrical holes 7 being located on a common reference circle (Teilkreis), in institute
It states and distinguishes a movably guided piston 8 in cylindrical hole.The piston and the cylindrical hole 7 jointly limit working chamber 9, described
The volume of working chamber is related to piston lift.
The piston 8, far from the working chamber 9 ball movable joint (Gelenkkugel) 10 hingedly with piston slider
(Kolbengleitschuh) 11 connection.The piston slider 11 sticks on being fixedly arranged relative to shell, swingable
Swing reel cage (Schwenkwiege) 12 on, wherein it is that the piston slider 11 is contacted and can along sliding supporting surface 13
Drift angle (Anstellwinkel) determine the piston lift the implemented in the case where cylindrical drum 4 rotation.
It is disposed in the drive shaft 1 and resets ball 18, the reset ball makes restoring board 19 towards the swing reel cage 12
Load, wherein the piston slider 11 is kept contacting with the supporting surface 13 for swinging reel cage 12 by the restoring board 19 again.?
Away from it is described swing reel cage 12 side on, the cylindrical drum 4 have end wall 14, the cylindrical drum using the end wall with
Support on the housing, relatively turnable distribution plate 15 does not contact, the distribution plate as the cylindrical hole 7
There is pressure manifold (Druckniere) 16 and induction mnifold (Saugniere) 17 on the same reference circle.The pressure manifold
16 and induction mnifold 17 the cylindrical drum 4 rotate during alternately connect with high-pressure channel and low-pressure channel.
The swing reel cage 12 is pivotally supported on the shell and can be filled by adjusting in its swing position
20 are set to be adjusted.
According to the prior art, in cylindrical hole 7' the piston 8' is shown in FIG. 2.The shell surface of the piston 8' with
And the wall of the cylindrical hole 7' is all not provided with coating.This leads to the horn-like abrasion of the cylindrical hole 7' in use,
It has thereby resulted in the increase in the gap between the shell surface of the piston 8' and the wall of the cylindrical hole 7' and then has also increased and let out
Leakage loss is lost.Thus the efficiency of the piston machine is compromised to especially severe.
The wall of cylindrical hole 7'' described in Fig. 3 is non-coating, and the shell surface of the piston 8'' is equipped with sliding paint layer
21'.In the case where the make of this hypothesis, it may appear that in the sliding paint layer 21' and the cylindrical hole of the piston 8''
Point contact between 7'' on the edge of the end of the cylindrical hole 7'' and therefore promptly degrade the sliding paint layer
21'.Therefore, because the higher scuffing loads of the sliding paint layer 21', can only use hard material layer to reduce friction.
But this hard material layer can improve the abrasion of the cylindrical hole 7'', so that the cylindrical hole can be made to shape horn-likely, this meeting
Lead to increased friction within the system and will lead to increased leakage loss.
The structural scheme according to the present invention shown in Fig. 4 also uses in piston machine shown in Fig. 1, in the structure
It makes in scheme, the cylindrical hole 7 is equipped with sliding paint layer 21.
During using the piston machine, the embodiment with Fig. 3 is not on the contrary, will lead to point contact, but will lead to described
Face contact between sliding paint layer 21 and the shell surface of the piston 8 of cylindrical hole 7 leads to the sliding paint layer 21 more in turn
Small load.Thus the load of the system of the tribology is substantially reduced.In addition, the system itself is being ground using the sliding paint layer
Optimised during conjunction process (Einlaufprozess), method is the parabola shaped profile of the setting sliding paint layer 21, this
It is because the sliding paint rests on along axial central region 22.In the central region 22, the shell surface of the piston 8
Gap between the sliding paint layer 21 enduringly keeps smaller, so that also lasting by the leakage loss in the gap
Ground keeps smaller.
In addition, also smaller by the coefficient of friction of the pairing of piston and the tribology for sliding the adjustment that paint layer 21 forms.
Claims (5)
1. a kind of piston machine of hydrostatic, the piston machine has cylindrical drum, and one is configured in the cylindrical drum
Or multiple cylindrical holes, it can be along the piston axially movable driven wherein being disposed in the cylindrical hole, which is characterized in that
The layer made of the material for reducing friction is coated on the wall of the cylindrical hole (7), it is described reducing made of the material to rub
Layer is coated to certain Interference size in the gap between the cylindrical shell surface of wall and the piston about the cylindrical hole
On the wall of the cylindrical hole, and the material of the protrusion part of the material for reducing friction can be by importing piston from institute
It states and is degraded on the material for reducing friction.
2. the piston machine of hydrostatic described in accordance with the claim 1, which is characterized in that the material for reducing friction is dry type
Lubricant.
3. the piston machine of hydrostatic according to claim 2, which is characterized in that the material for reducing friction is sliding
It paints (21).
4. according to the piston machine of hydrostatic described in any one of claims 1 to 3, which is characterized in that the hydrostatic
Piston machine be hydrostatic axial piston machine.
5. the piston machine of hydrostatic according to claim 4, which is characterized in that the piston machine of the hydrostatic is with oblique
Shaft type make or the axial piston machine that hydrostatic is configured to inclined disc type make.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012011843.0 | 2012-06-14 | ||
| DE102012011843 | 2012-06-14 | ||
| DE102012218902.5 | 2012-10-17 | ||
| DE201210218902 DE102012218902A1 (en) | 2012-06-14 | 2012-10-17 | Hydrostatic piston machine, particularly hydrostatic axial piston machine, has cylinder drum, in which one or multiple cylinder bores are formed, where layer of friction-reducing material is applied on walls of cylinder bores |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103511242A CN103511242A (en) | 2014-01-15 |
| CN103511242B true CN103511242B (en) | 2019-03-19 |
Family
ID=49668073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310232920.1A Expired - Fee Related CN103511242B (en) | 2012-06-14 | 2013-06-13 | The piston machine of hydrostatic |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103511242B (en) |
| DE (1) | DE102012218902A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014206755A1 (en) * | 2014-02-18 | 2015-08-20 | Robert Bosch Gmbh | Adjustment of an axial piston machine |
| DE102014208406A1 (en) * | 2014-05-06 | 2015-11-12 | Robert Bosch Gmbh | Hydrostatic piston machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2559789Y (en) * | 2002-07-12 | 2003-07-09 | *** | Constant flow eccentric water distribution plug |
| CN1434209A (en) * | 2003-02-21 | 2003-08-06 | 华中科技大学 | Axial plunger type water hydraulic pump |
| CN201496256U (en) * | 2009-08-18 | 2010-06-02 | 梁小恩 | High-radiating crankcase of power spray pump |
| CN101782066A (en) * | 2009-01-15 | 2010-07-21 | 潘建民 | Lubrication device of plunger pump transmission mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266970A (en) * | 1997-03-21 | 1998-10-06 | Komatsu Ltd | Piston of swash plate type piston pump/motor |
-
2012
- 2012-10-17 DE DE201210218902 patent/DE102012218902A1/en not_active Withdrawn
-
2013
- 2013-06-13 CN CN201310232920.1A patent/CN103511242B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2559789Y (en) * | 2002-07-12 | 2003-07-09 | *** | Constant flow eccentric water distribution plug |
| CN1434209A (en) * | 2003-02-21 | 2003-08-06 | 华中科技大学 | Axial plunger type water hydraulic pump |
| CN101782066A (en) * | 2009-01-15 | 2010-07-21 | 潘建民 | Lubrication device of plunger pump transmission mechanism |
| CN201496256U (en) * | 2009-08-18 | 2010-06-02 | 梁小恩 | High-radiating crankcase of power spray pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103511242A (en) | 2014-01-15 |
| DE102012218902A1 (en) | 2013-12-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190319 Termination date: 20200613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |