CN105673587B - Using the hydraulic transformer of combined type valve plate - Google Patents
Using the hydraulic transformer of combined type valve plate Download PDFInfo
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- CN105673587B CN105673587B CN201610176828.1A CN201610176828A CN105673587B CN 105673587 B CN105673587 B CN 105673587B CN 201610176828 A CN201610176828 A CN 201610176828A CN 105673587 B CN105673587 B CN 105673587B
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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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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
A kind of hydraulic transformer of use combined type valve plate, belong to hydraulic part technical field, it is characterized in that the external disk for being formed with two internal tooths is sleeved on the outside of the boss for the inner disc for being formed with an external tooth, fitted with the left side of inner disc bottom plate the right side of external disk, external disk first, second internal tooth and inner disc external tooth are with an annular groove, annular groove is divided into first, second, 3rd deep-slotted chip breaker, the first oil duct that high pressure fuel source passes through back casing, the first oilhole and the first deep-slotted chip breaker of inner disc are connected with plunger cavity, the second oil duct that executing agency passes through back casing, the second oilhole and the second deep-slotted chip breaker of inner disc are connected with plunger cavity, the 3rd oil duct that low pressure oil sources passes through back casing, 3rd oilhole of inner disc and the 3rd deep-slotted chip breaker are connected with plunger cavity, external disk is driven by spline by rotary actuator rotor to be rotated, inner disc is connected by bearing pin with back casing.Advantage is that hydraulic transformer port plate structure is simple, with larger transformation ratio, can effectively reduce vibration and noise, it is easy to accomplish SERVO CONTROL.
Description
Technical field
The invention belongs to hydraulic part technical field, and in particular to using the hydraulic transformer of combined type valve plate.
Background technology
Constant pressure network Secondary Regulation Technology is the important power-saving technology of current hydraulic drive field, its core parts -- hydraulic pressure
The technology of transformer is immature, constrains Secondary Regulation Technology popularization.Domestic and international multinomial patent and paper enter to hydraulic transformer
Go research,《The current situation of hydraulic transformer》Summarize three crucial problems that hydraulic transformer faces：" control problem ",
" vibration and noise ", " interface problem of valve plate and rear end cap "." vibration and noise " problem is that hydraulic transformer cylinder body rotates
During, plunger case from a kidney slot go to another kidney slot when, due to the fluid in plunger cavity by produce expand or press
Contracting, causes pressure surge, air pocket and noise；Silencing groove is opened between kidney slot can not solve noise problem, Innas BV companies very well
" shuttle " technical scheme is introduced, certain effect is obtained in terms of pressure peak and noise is reduced.(2) " valve plate and rear end cap
The transformation ratio scope that problem " result in hydraulic transformer is smaller, and discharge capacity, moment of torsion and efficiency characteristic are also poor；Researchers use
A variety of Optimal improvements measures, but transformation ratio scope can not still meet actual demand.
The patent of invention of application number 201610102962.7 proposes to match somebody with somebody using the combined type that inner disc, external disk and floating disc are constituted
Flow table replaces existing one chip valve plate, improves the transformation ratio of hydraulic transformer, and the pressure reduced in plunger cavity increases sharply.
But, because the combination port plate structure is complex, manufacture difficulty of processing is larger, rubs more serious, can influence valve plate
Working life.
The content of the invention
, can be efficiently against depositing in the prior art it is an object of the present invention to provide the hydraulic transformer using combined type valve plate
The problem of.The object of the present invention is achieved like this, as shown in Fig. 1~Fig. 6, and it includes procapsid 1, back casing 11, front end
Lid 17, rotary shaft 3, plunger 5, plunger case 6, rotary actuator rotor 8, drive end bearing bracket 17 are arranged on procapsid 1 by spring flange 16
End, procapsid 1 linked together with back casing 11 by bolt group 9, and rotary shaft 3 passes through clutch shaft bearing 2 and second bearing 4
In the center cavity of the leading portion of procapsid 1, bulb and the ball-and-socket on the rear end face of rotary shaft 3 that plunger case 6 passes through n plunger 5
It is connected, plunger case 6 and n plunger 5 form n plunger cavity 7, and n is positive integer, rotary shaft 3 and plunger case 6, both axis
It is intersecting with sharp angle α in approximately the same plane, present invention be characterized in that：
The external disk 14 for being formed with the internal tooth 14.1,14.2 of external disk first, second is sleeved on the inner disc 13 for being formed with inner disc external tooth 13.1
Inner disc boss 13.2 outside, the right side of external disk 14 fits with the left side of inner disc bottom plate 13.3, external disk 14, inner disc boss
Concave spherical surface of 13.2 left side respectively with the right-hand member of plunger case 6 is fitted, and inner disc 13 is arranged in the center cavity of the left end of back casing 11,
It is connected by alignment pin 10 with back casing 11, rotary actuator rotor 8 is coupled by spline J with external disk 14, is formed with first, second
The rotary actuator rotor 8 of external tooth 8.1,8.2 is arranged on procapsid 1 and is formed with the back casing 11 of first, second internal tooth 11.1,11.2
End face between, the external tooth 8.1,8.2 of rotary actuator rotor first, second and the internal tooth 11.1,11.2 of back casing first, second are located at
In annular chamber Q1, annular chamber Q1 is divided into rotary actuator first, second, third, fourth working chamber A1, B1, C1, D1, respectively
Connected with rotary actuator first, second, third, fourth hydraulic fluid port a1, b1, c1, d1；
As shown in Fig. 2 in said structure, the internal tooth 14.1,14.2 of external disk first, second and inner disc external tooth 13.1 are with annulus
In groove 27, annular groove 27 is divided into the first oil duct 21 in first, second, third deep-slotted chip breaker 18,19,20, back casing 11 lead to
The first oilhole 24, the first deep-slotted chip breaker 18 is crossed to connect with plunger cavity 7, the second oil duct 22 in back casing 11 by the second oilhole 25,
Second deep-slotted chip breaker 19 is connected with plunger cavity 7, the 3rd oil duct 12 in back casing 11 by the 3rd oilhole 26, the 3rd deep-slotted chip breaker 20 with
Plunger cavity 7 is connected；
As shown in figure 5, first, second, third oilhole 24,25,26 and inner disc external tooth 13.1 of inner disc 13 are located at annular groove
In 27, inner disc external tooth 13.1 is with low pressure oilhole 26 respectively positioned at the extreme higher position of annular groove 27 and extreme lower position, the first oilhole 24
Against the side of inner disc external tooth 13.1, the second oilhole 25 abuts the opposite side of inner disc external tooth 13.1；
As shown in Figure 4 and Figure 5, the angle of the first internal tooth of external disk 14.1 and the second internal tooth of external disk 14.2 is β, β=150 °~
210 °, the crest top land of the internal tooth 14.1,14.2 of external disk first, second respectively with the fit clearance of the periphery of inner disc 13 for 3~
The fit clearance of 8um, the crest top land of inner disc external tooth 13.1 and the inner headed face of external disk 14 is 3~8um, annular groove 27 and plunger case 6
Rear end face oilhole where anchor ring it is just right, the internal tooth 14.1 of external disk first, second, 14.2, inner disc external tooth 13.1 are in 1/2 tooth
The width of eminence is 1~2 times of the oilhole diameter of the rear end face of plunger case 6, the central point of the oilhole 26 of inner disc external tooth 13.1 and the 3rd
The axis co-planar of the straight line at place and the axis of rotary shaft 3 and plunger case 6, the first internal tooth of external disk 14.1 in annular groove 27 most
The angle of diameter and the diameter where inner disc external tooth 13.1 where high position P1 is upper stop angles θ 1, and θ 1 angle value scope is
10 °~40 °, diameter and the place of inner disc external tooth 13.1 where extreme lower position P2 of the first internal tooth of external disk 14.1 in annular groove 27
The angle of diameter be lower stop angles θ 2, θ 2 angle value scope is 10 °~40 °；
Advantage of the present invention and good effect are：
(1) the combined type valve plate scheme being made up of external disk and inner disc, the port plate structure of hydraulic transformer is simpler,
Rubbing surface and leakage face are less, can reduce friction and leak, extend valve plate working life.
(2) size of deep-slotted chip breaker, load deep-slotted chip breaker and low pressure deep-slotted chip breaker can be adjusted in a big way, the change of hydraulic transformer
Pressure ratio scope is improved.
(3) interval of any two deep-slotted chip breaker is only one outer in high pressure deep-slotted chip breaker, load deep-slotted chip breaker and low pressure deep-slotted chip breaker
Gap length between the width of tooth or internal tooth, adjacent deep-slotted chip breaker is significantly reduced, it is to avoid plunger cavity is moved between two deep-slotted chip breakers
When there is pressure surge, significantly reduce noise and cavitation erosion.
(4) external disk is driven by independent rotary actuator, it is easy to accomplish SERVO CONTROL, realizes that the high response of hydraulic transformer is special
Property.
Brief description of the drawings
Fig. 1 is the structural profile schematic diagram of hydraulic transformer.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 (b) is the sectional view of back casing.
Fig. 3 (a) is Fig. 3 (b) left view.
Fig. 3 (c) is Fig. 3 (b) right view.
Fig. 3 (d) is Fig. 3 (c) B-B sectional views.
Fig. 4 (b) is the front view of external disk.
The left view for Fig. 4 (b) that Fig. 4 (a) is.
Fig. 5 (b) is the front view of inner disc.
The left view for Fig. 5 (b) that Fig. 5 (a) is.
Fig. 6 is external disk hunting range schematic diagram.
In figure：1- procapsids, 2- clutch shaft bearings, 3- rotary shafts, 4- second bearings, 5- plungers, 6- plunger cases, 7- plungers
Chamber, 8- rotary actuator rotors, 8.1- rotary actuators the first external tooth of rotor, 8.2- rotary actuators the second external tooth of rotor, 9- bolt groups,
9 '-screw, 10- alignment pins, 11- back casings, the internal tooth of 11.1- back casings first, the oil ducts of 12- the 3rd, 13- inner discs, 13.1- inner discs
External tooth, 13.2- inner disc boss, 13.3- inner discs bottom plate, 14- external disks, the internal tooth of 14.1- external disks first, the internal tooth of 14.2- external disks second,
15- spacers, 16- check rings, 17- drive end bearing brackets, the deep-slotted chip breakers of 18- first, the deep-slotted chip breakers of 19- second, the deep-slotted chip breakers of 20- the 3rd, 21-
One oil duct, the oil ducts of 22- second, 23- positioning holes, the oilholes of 24- first, the oilholes of 25- second, the oilholes of 26- the 3rd, 27- annular grooves,
First working chamber of A1- rotary actuators, the second working chamber of B1- rotary actuators, the 3rd working chamber of C1- rotary actuators, D1- pendulum
4th working chamber of dynamic motor, the first hydraulic fluid port of a1- rotary actuators, the second hydraulic fluid port of b1- rotary actuators, c1- rotary actuators
3rd hydraulic fluid port, the 4th hydraulic fluid port of d1- rotary actuators, the extreme higher position of P1- external disk internal tooths, the extreme lower position of P2- external disk internal tooths, J-
Stop angles under stop angles on spline, Q1- annular chambers, θ 1-, θ 2-, the angle of β-two external disk internal tooths.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in figure 1, hydraulic transformer is a kind of inclined shaft type hydraulic transformer, drive end bearing bracket 17, procapsid 1, back casing 11
Constitute the closing cavity volume of inclined shaft type hydraulic transformer；Drive end bearing bracket 17 is closing the inside of cavity volume without opened hole, rotary shaft 3,
Improve the sealing of closing chamber；Rotary shaft 3 is arranged in the center cavity of procapsid 1 by clutch shaft bearing 2 and second bearing 4,
Angle α=20 ° of the axis of rotary shaft 3 and the axis of plunger case 6, rotary shaft 3 and plunger case 6 rotate simultaneously during, post
Stretching motion occurs in plunger cavity 7 for plug 5, and plunger cavity carries out oil suction and oil extraction；
As shown in Fig. 1,2,6, inner disc 13, external disk 14 have collectively constituted valve plate, instead of the list in existing hydraulic transformer
Chip valve plate, angle β=180 ° of the first internal tooth of external disk 14.1 and the second internal tooth of external disk 14.2；
As shown in figure 1, being formed with the rotary actuator rotor 8 of two external tooths, procapsid 1 and back casing 11 has collectively constituted one
Twayblade rotary actuator, twayblade motor is distributed to the active force of housing in symmetrical expression, and external high pressure oil sources and low pressure oil sources are logical
First, second, third and fourth hydraulic fluid port a1, b1, c1, d1 of rotary actuator is crossed to the first, second, third of rotary actuator and
Four working chamber A1, B1, C1, D1 fuel feeding and oil extraction, rotary actuator rotor 8 drive external disk 14 to realize and swing, swing horse by spline J
Swing angle up to rotor 8 is equal to the swing angle of external disk 14, the upper stop angles θ 1=30 ° of external disk, the lower stop angles θ 2 of external disk
=30 °；
External disk 14 is sleeved on the outside of inner disc boss 13.2, and the right side of external disk 14 is pasted with the left side of inner disc bottom plate 13.3
Close；The fit clearance of the crest top land of inner disc external tooth 13.1 and the inner headed face of external disk 14 is 4um, the internal tooth 14.1 of external disk first, second,
The fit clearance of 14.2 crest top land and the periphery of inner disc boss 13.2 is 4um, realizes and lubricates, leakage very little, external disk first,
Second internal tooth 14.1,14.2 and inner disc external tooth 13.1 by annular groove 27 split in order to first, second, third deep-slotted chip breaker 18,19,
20；
Inner disc 13 is connected by alignment pin 10 with back casing 11, and inner disc 13 can not rotate relative to back casing 11, inner disc 13
Right side pushes external disk 14, the convex spherical of the left end of combined type valve plate and the recessed ball of the rear end of plunger case 6 under pressure oil effect
Face is fitted, and hydrostatic support means of press seals area is formed between binding face, realizes lubrication, leaks very little；
The extreme higher position of annular groove 27 residing for inner disc external tooth 13.1 is the dead zone location in the rotary course of plunger case 6, reduction
Pressure in plunger cavity 7 increases sharply；
First oilhole 24 and the second oilhole 25 are located at the both sides of inner disc external tooth 13.1 respectively, and the 3rd oilhole 26 is located at annular groove
The swing angle scope of 27 extreme lower position, inner disc 13 and external disk 14 is maximum；
The internal tooth 14.1,14.2 of external disk first, second and inner disc external tooth 13.1 are after the width of 1/2 tooth eminence is plunger case 6
1.5 times of the oilhole diameter of end face, it is to avoid real by the oilhole of plunger case 6 rear end face between adjacent deep-slotted chip breaker in the course of work
Now connect, prevent that pressure increases sharply in plunger cavity 7；
Anchor ring where the oilhole of the rear end face of annular groove 27 and plunger case 6 is just right, and both internal diameter and external diameter are equal
It is identical, whole oil circuit is avoided the occurrence of larger part throttle loss；
As shown in figures 1 and 3, the first oil duct 21, the second oil duct 22 and the 3rd oil duct 12 have been opened in back casing 11 to distinguish
It is connected with external high pressure oil sources, executing agency and low pressure oil sources, then high pressure fuel source will pass through the first oil duct 21, the first oilhole
24th, the first deep-slotted chip breaker 18 is connected with one or more plunger cavities 7, and load oil sources will be by the second oil duct 22, the second oilhole 25, the
Two deep-slotted chip breakers 19 are connected with one or more plunger cavities 7, and low pressure oil sources will pass through the 3rd oil duct 12, the 3rd oilhole 26, the 3rd arc
Shape groove 20 is connected with one or more plunger cavities 7；
External disk 14 rotates relative to inner disc 13, the area of first, second, third deep-slotted chip breaker 18,19,20 is changed,
The number of the plunger cavity 7 of three deep-slotted chip breaker connections changes, the pressure ratio in the first deep-slotted chip breaker 18 and the second deep-slotted chip breaker 19
Change；
The driving of rotary actuator rotor 8 external disk 14 is rotated, and improves the response of hydraulic transformer output pressure and output flow
Speed.
Claims (2)
1. using the hydraulic transformer of combined type valve plate, it includes procapsid (1), back casing (11), drive end bearing bracket (17), rotation
Axle (3), plunger (5), plunger case (6), rotary actuator rotor (8), drive end bearing bracket (17) are arranged on fore shell by spring flange (16)
The end of body (1), procapsid (1) is linked together with back casing (11) by bolt group (9), and rotary shaft (3) passes through first axle
Hold (2) and second bearing (4) is arranged in the center cavity of procapsid (1) leading portion, the bulb that plunger case (6) passes through n plunger (5)
It is connected with the ball-and-socket on rotary shaft (3) rear end face, plunger case (6) and n plunger (5) form n plunger cavity (7), and n is just
Integer, rotary shaft (3) and plunger case (6), both axis are intersecting with sharp angle α in approximately the same plane, it is characterised in that：
It is formed with the internal tooth of external disk first (14.1), the external disk (14) of the internal tooth of external disk second (14.2) is sleeved on and is formed with inner disc external tooth
(13.1) outside of the inner disc boss (13.2) of inner disc (13), right side and inner disc bottom plate (13.3) left side of external disk (14)
Concave spherical surface of the left side of laminating, external disk (14) and inner disc boss (13.2) respectively with plunger case (6) right-hand member is fitted, inner disc (13)
In the center cavity of back casing (11) left end, it is connected by alignment pin (10) with back casing (11), rotary actuator rotor
(8) coupled by spline J with external disk (14), be formed with the external tooth of rotary actuator rotor first (8.1), the external tooth of rotary actuator rotor second
(8.2) rotary actuator rotor (8) is arranged on procapsid (1) and is formed with the internal tooth of back casing first (11.1), in back casing second
Between the end face of the back casing (11) of tooth (11.2), the external tooth of rotary actuator rotor first (8.1), the external tooth of rotary actuator rotor second
(8.2) it is located at the internal tooth of back casing first (11.1), the internal tooth of back casing second (11.2) in annular chamber (Q1), by annular chamber (Q1)
It is divided into the working chamber of rotary actuator first (A1), the working chamber of rotary actuator second (B1), the working chamber (C1) of rotary actuator the 3rd, pendulum
The dynamic working chamber (D1) of motor the 4th, respectively with the hydraulic fluid port of rotary actuator first (a1), the hydraulic fluid port of rotary actuator second (b1), rotary actuator
3rd hydraulic fluid port (c1), the connection of the hydraulic fluid port (d1) of rotary actuator the 4th；
The internal tooth of external disk first (14.1), the internal tooth of external disk second (14.2) and inner disc external tooth (13.1) are incited somebody to action with annular groove (27)
Annular groove (27) is divided into the first deep-slotted chip breaker (18), the second deep-slotted chip breaker (19), the 3rd deep-slotted chip breaker (20), back casing (11)
One oil duct (21) is connected by the first oilhole (24), the first deep-slotted chip breaker (18) with plunger cavity (7), the second oil in back casing (11)
Road (22) is connected by the second oilhole (25), the second deep-slotted chip breaker (19) with plunger cavity (7), the 3rd oil duct in back casing (11)
(12) connected by the 3rd oilhole (26), the 3rd deep-slotted chip breaker (20) with plunger cavity (7), the first oilhole (24), the second oilhole (25),
3rd oilhole (26) and inner disc external tooth (13.1) are located in annular groove (27), inner disc external tooth (13.1) and the 3rd oilhole (26) difference
Positioned at the extreme higher position of annular groove (27) and extreme lower position, the first oilhole (24) abuts the side of inner disc external tooth (13.1), second
Oilhole (25) abuts the opposite side of inner disc external tooth (13.1).
2. as claimed in claim 1 using the hydraulic transformer of combined type valve plate, it is characterised in that：The internal tooth of external disk first
(14.1) and the internal tooth of external disk second (14.2) angle β, β=150 °~210 °, in the internal tooth of external disk first (14.1), external disk second
The crest top land of tooth (14.2) is respectively 3~8 μm, inner disc external tooth (13.1) with the fit clearance of the periphery of inner disc boss (13.2)
The fit clearance of inner headed face of crest top land and external disk (14) be 3~8 μm, annular groove (27) and the rear end face of plunger case (6)
Anchor ring where oilhole is just right, and the internal tooth of external disk first (14.1), the internal tooth of external disk second (14.2), inner disc external tooth (13.1) are 1/
The width of 2 tooth eminences is 1~2 times of the oilhole diameter of plunger case (6) rear end face, inner disc external tooth (13.1) and the 3rd oilhole (26)
Central point where straight line and rotary shaft (3) axis and the axis co-planar of plunger case (6), the internal tooth of external disk first (14.1) exists
The angle of the diameter and the diameter where inner disc external tooth (13.1) where extreme higher position (P1) in annular groove (27) is upper stop
Angle θ 1, upper stop angles θ 1 angle value scope are 10 °~40 °, and the internal tooth of external disk first (14.1) is minimum in annular groove (27)
The angle of diameter and the diameter where inner disc external tooth (13.1) where position (P2) is lower stop angles θ 2, θ 2 angle value scope
For 10 °~40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176828.1A CN105673587B (en) | 2016-03-24 | 2016-03-24 | Using the hydraulic transformer of combined type valve plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176828.1A CN105673587B (en) | 2016-03-24 | 2016-03-24 | Using the hydraulic transformer of combined type valve plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673587A CN105673587A (en) | 2016-06-15 |
| CN105673587B true CN105673587B (en) | 2017-08-15 |
Family
ID=56224055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610176828.1A Active CN105673587B (en) | 2016-03-24 | 2016-03-24 | Using the hydraulic transformer of combined type valve plate |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930995B (en) * | 2017-05-09 | 2018-09-25 | 太原科技大学 | A kind of compression apparatus for adjusting force of plunger hydraulic element |
| CN107013522B (en) * | 2017-05-09 | 2018-09-25 | 太原科技大学 | The compression apparatus for adjusting force of Port Plate Pair |
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| WO1999051881A1 (en) * | 1998-04-07 | 1999-10-14 | Noax B.V. | Adjustable face plate for hydraulic pump or motor |
| US6116138A (en) * | 1996-02-23 | 2000-09-12 | Innas Free Piston B.V. | Pressure transformer |
| DE10037114A1 (en) * | 2000-01-25 | 2001-07-26 | Mannesmann Rexroth Ag | Hydraulic transformer; has displacers in rotor supported by stroke element with controllers for hydraulic fluid connected to displacer chambers, where first controller and stroke element are connected |
| DE10025248A1 (en) * | 2000-05-22 | 2001-11-29 | Mannesmann Rexroth Ag | Hydraulic transformer has at least those channels leading to supply and working connections of housing opening at periphery of control part in approximately radial direction |
| NL1016046C2 (en) * | 2000-08-29 | 2002-03-01 | Innas Free Piston Bv | Hydraulic pressure transformer converts first oil flow with first pressure into second oil flow with second pressure by feeding or withdrawing oil with low pressure |
| CN1187531C (en) * | 2003-06-02 | 2005-02-02 | 浙江大学 | Hydraulic transformer |
| CN101435417A (en) * | 2008-12-12 | 2009-05-20 | 北京理工大学 | Hydraulic transformer for increasing voltage ratio regulation scope |
| CN101614226A (en) * | 2009-07-14 | 2009-12-30 | 刘顺安 | Internal opening hydraulic transformer and voltage-transforming method |
| CN101424282B (en) * | 2008-11-05 | 2011-05-18 | 北京理工大学 | Inclined shaft type hydraulic transformer and voltage transformation method |
| CN101634316B (en) * | 2009-06-09 | 2012-02-29 | 东华大学 | Hydraulic transformer with safety device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051799C (en) * | 1998-01-19 | 2000-04-26 | 张少清 | Mini-equipment for fermenting and making beer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6116138A (en) * | 1996-02-23 | 2000-09-12 | Innas Free Piston B.V. | Pressure transformer |
| WO1999051881A1 (en) * | 1998-04-07 | 1999-10-14 | Noax B.V. | Adjustable face plate for hydraulic pump or motor |
| DE10037114A1 (en) * | 2000-01-25 | 2001-07-26 | Mannesmann Rexroth Ag | Hydraulic transformer; has displacers in rotor supported by stroke element with controllers for hydraulic fluid connected to displacer chambers, where first controller and stroke element are connected |
| DE10025248A1 (en) * | 2000-05-22 | 2001-11-29 | Mannesmann Rexroth Ag | Hydraulic transformer has at least those channels leading to supply and working connections of housing opening at periphery of control part in approximately radial direction |
| NL1016046C2 (en) * | 2000-08-29 | 2002-03-01 | Innas Free Piston Bv | Hydraulic pressure transformer converts first oil flow with first pressure into second oil flow with second pressure by feeding or withdrawing oil with low pressure |
| CN1187531C (en) * | 2003-06-02 | 2005-02-02 | 浙江大学 | Hydraulic transformer |
| CN101424282B (en) * | 2008-11-05 | 2011-05-18 | 北京理工大学 | Inclined shaft type hydraulic transformer and voltage transformation method |
| CN101435417A (en) * | 2008-12-12 | 2009-05-20 | 北京理工大学 | Hydraulic transformer for increasing voltage ratio regulation scope |
| CN101634316B (en) * | 2009-06-09 | 2012-02-29 | 东华大学 | Hydraulic transformer with safety device |
| CN101614226A (en) * | 2009-07-14 | 2009-12-30 | 刘顺安 | Internal opening hydraulic transformer and voltage-transforming method |
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| Publication number | Publication date |
|---|---|
| CN105673587A (en) | 2016-06-15 |
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