CN108999817B - Hydraulic pressure transformation method - Google Patents
Hydraulic pressure transformation method Download PDFInfo
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- CN108999817B CN108999817B CN201811058807.5A CN201811058807A CN108999817B CN 108999817 B CN108999817 B CN 108999817B CN 201811058807 A CN201811058807 A CN 201811058807A CN 108999817 B CN108999817 B CN 108999817B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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Abstract
The application discloses a hydraulic pressure transformation method. The hydraulic pressure transformation method comprises the steps that a driving shaft is connected with a rotor, the rotor is arranged in a stator, and the rotor is sleeved on a flow distribution shaft through a bearing; three oil ports are formed in the valve shaft, at least three piston cavities are formed in the rotor, each piston cavity corresponds to one piston, and the pistons are located in the corresponding piston cavities; the rotor and the inner wall of the stator are radially and eccentrically arranged, the inner wall of the stator limits the position of the piston in a piston cavity, and two ends of the piston cavity are respectively communicated with the inside of the stator and an oil port in the valve shaft; the driving shaft is driven to rotate, and the driving shaft drives the rotor to rotate in the stator so as to enable the piston positioned in the piston cavity of the rotor to do reciprocating motion; and connecting a stator driving mechanism with the stator, wherein the stator driving mechanism drives the stator to rotate relative to the rotor so as to change the radial eccentric direction between the rotor and the stator. The application solves the technical problems that a hydraulic pressure transformation method in the prior art is narrow in transformation range and large in control difficulty.
Description
Technical Field
The application relates to the technical field of machinery, in particular to a hydraulic pressure transformation method.
Background
A hydraulic transformer is a hydraulic component that performs pressure conversion in a hydraulic transmission system. The pressure-reducing device can convert input pressure into another pressure output with high efficiency, and can reduce pressure or increase pressure. The hydraulic constant-pressure driving device can drive linear loads without throttling loss and can also drive rotary loads, and has wide application prospects in hydraulic constant-pressure networks.
The prior art hydraulic transformers are mostly of axial plunger type construction, implemented by a combination of two hydraulic components, or based on an improved design of the axial plunger pump, operated by a rotating port plate, or swash plate, to vary the pressure ratio between the output pressure and the input pressure.
In the prior art, the hydraulic transformer has a narrow transformation range of a hydraulic transformation method and great control difficulty, and the application range is limited.
Disclosure of Invention
The application mainly aims to provide a hydraulic pressure transformation method to solve the problems that in the prior art, the hydraulic pressure transformation method is narrow in transformation range and large in control difficulty.
In order to achieve the above object, according to an aspect of an embodiment of the present application, there is provided a hydraulic pressure varying method.
The hydraulic pressure transformation method comprises the following steps:
connecting a driving shaft with a rotor, arranging the rotor in a stator, and sleeving the rotor on a flow distribution shaft through a bearing;
three oil ports are formed in the valve shaft, at least three piston cavities are formed in the rotor, each piston cavity corresponds to one piston, and the pistons are located in the corresponding piston cavities;
the rotor and the inner wall of the stator are radially and eccentrically arranged, the inner wall of the stator limits the position of the piston in a piston cavity, and two ends of the piston cavity are respectively communicated with the inside of the stator and an oil port in the valve shaft;
the driving shaft is driven to rotate, and the driving shaft drives the rotor to rotate in the stator so as to enable the piston positioned in the piston cavity of the rotor to do reciprocating motion, thereby adjusting the pressure between the oil ports;
the stator driving mechanism is connected with the stator, and the stator driving mechanism drives the stator to rotate relative to the rotor, so that the radial eccentric direction between the rotor and the stator is changed, and the pressure ratio between the oil ports is adjusted.
Optionally, a worm wheel is arranged on the stator, and the worm wheel and the rotor are arranged concentrically in the radial direction;
the stator driving mechanism is a worm driving mechanism, and a worm included in the stator driving mechanism is meshed with a worm wheel on the stator;
the stator driving mechanism drives the worm wheel on the stator to rotate so as to change the radial eccentric direction between the rotor and the stator.
Optionally, the method further comprises:
and three oil ports arranged on the flow distribution shaft are respectively communicated with an external high-pressure oil path, an external low-pressure oil path and an external load oil path.
Optionally, the piston is a ball plunger or a plunger.
Optionally, at least three piston chambers are evenly distributed on the rotor.
Optionally, the method further comprises:
the stator is sleeved on the stator bushing, and the rotor is arranged in the stator bushing.
Optionally, the method further comprises:
disposing the stator within the housing such that a gap exists between the stator and the housing;
a first opening and a second opening are arranged on the shell, so that one end of the driving shaft is connected with the rotor through the first opening, and the flow distribution shaft is connected with the rotor through the second opening;
the flow distribution shaft is fixed on the shell, the rotor is fixed on the shell through the bearing, and one end of the stator driving mechanism extends into the shell to be connected with the stator.
Optionally, the method further comprises:
connecting the end cap to the housing such that the end cap covers the first opening;
a third opening is provided in the end cap such that one end of the drive shaft extends out of the housing through the third opening.
Optionally, the method further comprises:
the oil drain plug screw is connected to the shell.
In this application embodiment, adopt the mode that radial eccentric set up between stator inner wall and the rotor, through the method of the rotatory radial eccentric direction that changes between stator inner wall and the rotor of drive stator, reached the purpose of adjusting the pressure ratio between the hydraulic fluid port to realized simplifying mechanical structure, increased the vary voltage scope, reduced the technical effect of the control degree of difficulty, and then solved among the prior art hydraulic pressure vary voltage method vary voltage scope narrow, the technical problem that the control degree of difficulty is big.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
fig. 1 is a schematic structural diagram of a hydraulic transformer applying a hydraulic pressure transformation method according to an embodiment of the present application;
fig. 2 is a side sectional view of a hydraulic transformer of fig. 1.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "inner", "outer", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," "secured," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
As shown in fig. 1 and 2, the present application relates to a hydraulic pressure transformation method, including:
connecting a driving shaft 1 with a rotor 3, arranging the rotor 3 in a stator 2, and sleeving the rotor 3 on a flow distribution shaft 4 through a bearing;
three oil ports 41 are formed in the valve shaft 4, at least three piston cavities 31 are formed in the rotor 3, each piston cavity 31 corresponds to one piston 6, and the pistons 6 are located in the corresponding piston cavities 31;
the rotor 3 and the inner wall of the stator 2 are radially and eccentrically arranged, the inner wall of the stator 2 limits the position of the piston 6 in the piston cavity 31, and two ends of the piston cavity 31 are respectively communicated with the inside of the stator 2 and one oil port 41 in the port shaft 4;
the driving shaft 1 is driven to rotate, the driving shaft 1 drives the rotor 3 to rotate in the stator 2, so that the piston 6 in the piston cavity 31 of the rotor 3 reciprocates, and the pressure between the oil ports 41 is adjusted;
the stator driving mechanism 5 is connected with the stator 2, and the stator driving mechanism 5 drives the stator 2 to rotate relative to the rotor 3, so that the radial eccentric direction between the rotor 3 and the stator 2 is changed, and the pressure ratio between the oil ports 41 is adjusted.
In this application embodiment, adopt the mode that radial eccentricity set up between stator 2 inner wall and the rotor 3, through the method of the rotatory radial eccentricity direction that changes between stator 2 inner wall and the rotor 3 of drive stator 2, the purpose of adjusting the pressure ratio between three hydraulic fluid ports 41 has been reached, wherein, drive stator 2 is rotatory to change between stator 2 inner wall and the rotor 3 radial eccentricity direction and has changed the position of piston 6 relative piston chamber 31 on each different position of rotor 3 promptly, and then change the pressure between the hydraulic fluid port 41, thereby adjust the pressure ratio between the hydraulic fluid port 41. The number of parts of the hydraulic transformer applying the hydraulic pressure transformation method is far less than that of the hydraulic transformer in the prior art, so that the mechanical structure is simplified; the stator 2 can be driven to rotate to change the radial eccentric direction between the inner wall of the stator 2 and the rotor 3 to be 0-360 degrees, so that the transformation range of the hydraulic transformation method can be greatly increased, and the technical effect of controlling difficulty is effectively reduced.
Optionally, a worm wheel is arranged on the stator 2, and the worm wheel and the rotor 3 are arranged concentrically in the radial direction;
the stator driving mechanism 5 is a worm driving mechanism, and a worm included in the stator driving mechanism 5 is meshed with a worm wheel on the stator 2;
the stator driving mechanism 5 drives the worm wheel on the stator 2 to rotate so as to change the radial eccentric direction between the rotor 3 and the stator 2.
In this embodiment, radial concentric setting between worm wheel and the rotor 3, become like this and injectd stator 2's rotation orbit, because the worm wheel rotation on the stator actuating mechanism 5 drive stator 2 can realize changing radial eccentric direction between rotor 3 and the stator 2, radial decentraction between stator 2's rotation orbit and the rotor 3 promptly, this hydraulic sensor only need operate through drive stator actuating mechanism 5 and can realize changing the pressure ratio between the three hydraulic fluid port 41, accomplish the vary voltage operation, thereby realized the technological effect who reduces the control degree of difficulty.
It should be noted that, in the embodiment of the present application, the stator driving mechanism should not be limited to the worm and gear mechanism, and those skilled in the art may specifically set other mechanisms capable of driving the stator to rotate as the case may be.
Optionally, the method further comprises:
three oil ports 41 arranged on the valve shaft 4 are respectively communicated with an external high-pressure oil path (port A), an external low-pressure oil path (port A) and an external load oil path (port B).
In this embodiment, the radial eccentric direction between the inner wall of the stator 2 and the rotor 3 is changed by driving the stator 2 to rotate, that is, the position of the piston 6 relative to the piston cavity 31 in each different direction of the rotor 3 is changed, and further, the pressure between the external high-pressure oil path (port a) and the external low-pressure oil path (port T) is changed, so that the pressure ratio between the external high-pressure oil path (port a) and the external low-pressure oil path (port T) is adjusted.
Optionally, the piston 6 is a ball plunger or a plunger.
Optionally, at least three piston chambers 31 are evenly distributed on the rotor 3.
In the present embodiment, the number of the piston cavities 31 may be 3, 4, 5, 6, 7, 8, 9 … …. the plurality of piston cavities 31 should be evenly distributed on the rotor 3, so as to achieve a better pressure changing effect.
Optionally, the method further comprises:
the stator 2 is fitted over the stator liner 7, and the rotor 3 is disposed in the stator liner 7.
In this embodiment, the wear of the piston 6 and the like to the stator 2 with a complex structure can be reduced by arranging the stator bush 7, and when the stator bush 7 is worn seriously, the stator bush 7 can be replaced, so that the stator 2 with a complex structure and high manufacturing cost is prevented from being replaced.
Optionally, the method further comprises:
the stator 2 is disposed within the housing 8 such that a gap exists between the stator 2 and the housing 8;
a first opening and a second opening are arranged on the shell 8, so that one end of the driving shaft 1 is connected with the rotor 3 through the first opening, and the port shaft 4 is connected with the rotor 3 through the second opening;
the valve shaft 4 is fixed on the shell 8, the rotor 3 is fixed on the shell 8 through a bearing, and one end of the stator driving mechanism 5 extends into the shell 8 to be connected with the stator 2.
Alternatively, the port shaft 4 is fixed to the housing 8 by a collar.
Optionally, the method further comprises:
attaching the end cap 9 to the housing 8 with the end cap 9 covering the first opening;
a third opening is provided in the end cap 9 so that one end of the drive shaft 1 extends out of the housing 8 through the third opening.
Optionally, the method further comprises:
the oil drain plug 10 is connected to the housing 8.
In the embodiment of the application, the hydraulic pressure transformation method adopts a mode of radial eccentric arrangement between the inner wall of the stator 2 and the rotor 3, and the purpose of adjusting the pressure ratio between the oil ports 41 is achieved by driving the stator 2 to rotate to change the radial eccentric direction between the inner wall of the stator 2 and the rotor 3, so that the transformation range is increased, the technical effect of control difficulty is reduced, and the technical problems of narrow transformation range and high control difficulty of the hydraulic pressure transformation method in the prior art are solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A method of hydraulic pressure transformation, the method comprising:
connecting a driving shaft with a rotor, arranging the rotor in a stator, and sleeving the rotor on a flow distribution shaft through a bearing;
the three oil ports are arranged on the valve shaft, at least three piston cavities are arranged on the rotor, each piston cavity corresponds to one piston, and the pistons are positioned in the corresponding piston cavities;
the rotor and the inner wall of the stator are radially and eccentrically arranged, the inner wall of the stator limits the position of the piston in the piston cavity, and two ends of the piston cavity are respectively communicated with the inside of the stator and one oil port in the valve shaft;
the driving shaft is driven to rotate, and the driving shaft drives the rotor to rotate in the stator, so that a piston in a piston cavity of the rotor reciprocates, and the pressure between the oil ports is adjusted;
and connecting a stator driving mechanism with the stator, wherein the stator driving mechanism drives the stator to rotate relative to the rotor so as to change the radial eccentric direction between the rotor and the stator, thereby adjusting the pressure ratio between the oil ports.
2. The hydraulic pressure transformation method according to claim 1, wherein:
a worm wheel is arranged on the stator, and the worm wheel and the rotor are arranged concentrically in the radial direction;
the stator driving mechanism is a worm driving mechanism, and a worm included in the stator driving mechanism is meshed with a worm wheel on the stator;
the stator driving mechanism drives a worm wheel on the stator to rotate so as to change the radial eccentric direction between the rotor and the stator.
3. The hydraulic pressure transformation method of claim 1, further comprising:
and the three oil ports arranged on the flow distribution shaft are respectively communicated with an external high-pressure oil path, an external low-pressure oil path and an external load oil path.
4. The hydraulic pressure transformation method according to claim 1, wherein the piston is a ball plunger or a plunger.
5. The hydraulic pressure transformation method according to claim 1, wherein the at least three piston chambers are evenly distributed on the rotor.
6. The hydraulic pressure transformation method of claim 1, further comprising:
the stator is sleeved on a stator liner, and the rotor is arranged in the stator liner.
7. The hydraulic pressure transformation method of claim 1, further comprising:
disposing the stator within a housing such that a gap exists between the stator and the housing;
a first opening and a second opening are arranged on the shell, so that one end of the driving shaft is connected with the rotor through the first opening, and the valve shaft is connected with the rotor through the second opening;
and fixing the flow distribution shaft on the shell, fixing the rotor on the shell through a bearing, and extending one end of the stator driving mechanism into the shell to be connected with the stator.
8. The hydraulic pressure transformation method of claim 7, further comprising:
attaching an end cap to the housing such that the end cap overlies the first opening;
a third opening is provided in the end cap such that one end of the drive shaft extends out of the housing through the third opening.
9. The hydraulic pressure transformation method of claim 7, further comprising:
and connecting the oil drain plug screw to the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058807.5A CN108999817B (en) | 2018-09-11 | 2018-09-11 | Hydraulic pressure transformation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058807.5A CN108999817B (en) | 2018-09-11 | 2018-09-11 | Hydraulic pressure transformation method |
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| CN108999817A CN108999817A (en) | 2018-12-14 |
| CN108999817B true CN108999817B (en) | 2020-06-02 |
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| CN201811058807.5A Active CN108999817B (en) | 2018-09-11 | 2018-09-11 | Hydraulic pressure transformation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114542683A (en) * | 2022-03-15 | 2022-05-27 | 北京理工大学 | Conjuncted ball plunger pump motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3391538A (en) * | 1966-02-03 | 1968-07-09 | Molins Machine Co Ltd | Hydraulic intensifiers |
| GB1317742A (en) * | 1970-06-26 | 1973-05-23 | Barrett G M | Fluid pressure intensifier |
| NL1002430C2 (en) * | 1996-02-23 | 1997-08-26 | Innas Free Piston Ifp Bv | Device for generating, using or transforming hydraulic energy. |
| US7214315B2 (en) * | 2004-08-20 | 2007-05-08 | Scott Shumway | Pressure exchange apparatus with integral pump |
| CN201588825U (en) * | 2009-10-14 | 2010-09-22 | 山东交通学院 | Hand-controlled blade type hydraulic transformer |
| CN102094856B (en) * | 2011-01-04 | 2013-11-13 | 孟庆龙 | Hydraulic device for increasing pressure |
| CN102777432B (en) * | 2012-07-21 | 2018-02-13 | 沃尔科技有限公司 | Rotary pressure transfer device with function of increasing pressure |
| CN103089405B (en) * | 2013-01-09 | 2015-09-16 | 北京理工大学 | Rotor clutch type motor-driven power generation turbocharger |
| EP3369929B1 (en) * | 2017-03-03 | 2019-04-24 | PistonPower ApS | Pressure amplifier |
| CN107461370A (en) * | 2017-07-24 | 2017-12-12 | 徐州工程学院 | A kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer |
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- 2018-09-11 CN CN201811058807.5A patent/CN108999817B/en active Active
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