CN107461370A - A kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer - Google Patents
A kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer Download PDFInfo
- Publication number
- CN107461370A CN107461370A CN201710605713.4A CN201710605713A CN107461370A CN 107461370 A CN107461370 A CN 107461370A CN 201710605713 A CN201710605713 A CN 201710605713A CN 107461370 A CN107461370 A CN 107461370A
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- Prior art keywords
- pintle
- hydraulic
- swash plate
- somebody
- transformer
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Classifications
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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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer, including hydraulic transformer shell, cylinder body, valve plate, plunger, swash plate, rear end cap, rotary actuator and pintle, the pintle is the swinging axle of rotary actuator, pintle is connected with valve plate by bearing pin, is realized and sealed by contact face；Three waist types are provided with valve plate and match somebody with somebody chute, it is corresponding on pintle to be provided with valve plate three and match somebody with somebody chute with what chute size matched.The present invention realizes rotary actuator and is integrally mounted in hydraulic transformer flow housing, and three oil-outs of pintle effectively shorten the entire length of hydraulic transformer on the same axial dimension of pintle is distributed on；By the way that valve plate is connected with pintle, the transformation ratio and transformation scope of hydraulic transformer are improved, avoids restriction loss.
Description
Technical field
The present invention relates to a kind of hydraulic transformer, and in particular to a kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer, category
In hydraulic-pressure control apparatus technical field.
Background technology
Hydraulic transformer is with higher efficiency using hydraulic constant pressure network Secondary Regulation Technology by the energy of constant pressure network
The hydraulic test of power transmission is carried out with variable pressure, has the advantages that cost is low, control performance is excellent, operate steadily.
Traditional hydraulic transformer is directly coaxially to couple hydraulic motor and hydraulic pump, by the row for adjusting hydraulic motor
Amount, input pressure is changed into the pressure of load needs, so as to realize pressure change.This volume of transformer and weight it is big, it is necessary to
Adjusting force it is also bigger, cost is high, and efficiency is low.
New integrated hydraulic transformer is integral by the function set of hydraulic motor and hydraulic pump, utilizes hydraulic motor
The rotation of valve plate of plunger pump is driven, three waist types are machined on valve plate and match somebody with somebody chute, but because valve plate is rotation, are rotated
During flow area between valve plate and rear end cap be gradually reduced, the throttling action increase between rear end cap and valve plate will
Cause larger energy restriction loss, reduce the efficiency of hydraulic transformer；Because valve plate and cylinder body inertia are small, antijamming capability
Difference, therefore valve plate small variations can all change the balance of cylinder body torque and the rotary speed of transformer, and then change hydraulic pressure and become
The flow of depressor, cause output pressure unstable；This hydraulic transformer is by adjusting valve plate around cylinder center axis
The anglec of rotation matches somebody with somebody the fluid flow of chute to realize into and out of three waist types of transformer, so as to adjust cylinder body rotary speed and hydraulic pressure
Transformer transformation ratio, in order to ensure effective flow area, can only further limiting rotation angle scope, therefore transformation scope is small,
Transformation ratio control accuracy is low；, can not active flow control and existing novel hydraulic transformer also has that control structure volume is big
Problem.
The content of the invention
To solve the above problems, the present invention provides a kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer, it is possible to achieve nothing
The flow of restriction loss, expand Hydraulic Transformer scope, improve the integrated level of controlling organization and the sound of hydraulic transformer
Speed is answered, ensures the stability of output pressure.
A kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer of the invention, including transformer case, cylinder body, valve plate, post
Plug and swash plate, cylinder body are arranged on output shaft by spline, and valve plate is located at cylinder body one end and in sealing contact with cylinder body, and swash plate is set
In the cylinder body other end and on the transformer case, some plunger cavities are provided with cylinder body, plunger is arranged in plunger cavity and one
End and swash plate sliding contact, in addition to rear end cap, rotary actuator and pintle, the pintle are rotary actuator
Swinging axle, pintle is connected with valve plate by bearing pin, and contact face is in sealing contact, and rear end cap is mounted in flow by bearing holder (housing, cover)
On axle, rear end cap is connected with transformer case sealing；Three waist types are provided with valve plate and match somebody with somebody chute, it is corresponding on pintle to be provided with
Match somebody with somebody chute with what chute size matched for three with valve plate, pintle is provided with blind hole around axle center, and the nose end of blind hole, which is provided with, to be drawn
Discharge orifice；The rotary actuator housing is assemblied on pintle by motor protecgulum and back cover of motor, and back cover of motor passes through axle
Hold at the shaft shoulder of pintle, hydraulic oil is drained at the bearing of installation back cover of motor by the conduction hole.
Three on valve plate are respectively A, B, T mouth with chute, and size identical A, B, T mouth are equally provided with pintle simultaneously
Corresponding one by one with A, B, T mouth on valve plate, the A mouths on valve plate are connected with high-pressure oil passage by the A mouths on pintle, matched somebody with somebody
B mouths on flow table are connected by the B mouths on pintle with load, the T mouths on valve plate pass through the T mouths and low pressure oil on pintle
Road connects, and with the swing of rotary actuator, pintle is that the main shaft of rotary actuator is also swung therewith, and drives flow
Disk synchronous hunting, realize the change of pilot angle；Due to being connected between valve plate and pintle, and with chute size is identical, end face
Sealing, therefore be not in restriction loss in valve plate rotary course, substantially increase the operating efficiency of hydraulic transformer；By
Limitation in no rotation dead angle, therefore the swing angle of rotary actuator is the anglec of rotation of valve plate, so that transformation scope
It is wider；The blind hole opened up at pintle axle center realizes the loss of weight of main shaft, reduces its rotary inertia, improves pintle and flow
The wobble accuracy of disk, and then improve the stability of output pressure；Conduction hole can lead to hydraulic oil at bearing, realize pair
The lubrication of bearing, improves service life of equipment；Rotary actuator is integrally mounted in hydraulic transformer flow housing, is had
The entire length for shortening hydraulic transformer of effect, improve the integrated level of controlling organization and the response speed of hydraulic transformer
Degree.
Further, motor is integrated with transformer case, the stator of the motor is arranged on transformer case inwall, turns
Son is arranged on outside cylinder body.
By the rotation of motor control cylinder body, cylinder body rotation drives plunger rotary to turn, and is connect due to being slided between plunger and swash plate
Touch, therefore cylinder body, in rotary course, the volume of plunger cavity constantly changes, so as to realize changing for hydraulic transformer output flow
Become, the flow of active control hydraulic transformer can be realized using motor control cylinder body.
Further, the output end of output shaft is provided with speed probe, and the support one for install sensor passes through bolt
It is fixed on transformer case；The input of pintle is provided with angular transducer, and the support two for install sensor passes through spiral shell
Bolt is fixed on back cover of motor.
The rotating speed of output shaft is detected by speed probe, the anglec of rotation that pintle is detected by angular transducer is examined
The size of pilot angle is surveyed, data are delivered to tele-control system by the sensor, so as to improve equipment control accuracy and sound
Answer speed.
Further, the rotary actuator is servo oscillating hydraulic motor.Flow is controlled by electrohydraulic servo valve
The rotation of axle and motor spindle.
In order to further improve the sealing effectiveness of flow housing, pass through rotation between the housing and pintle of rotary actuator
Turn Glais ring and realize dynamic sealing.So as to which outside oil-collecting hole is fixed when ensureing that pintle rotates.
Further, output shaft is connected with pintle contact jaw by bearing.Output shaft and pintle are respectively by different
Drive mechanism drives rotation, so as to realize that regulation output pressure and control both output flows are non-interference.
High-pressure oil passage is connected with the pipeline of B mouths with head piece A mouths due to valve plate, further to improve the resistance to compression of valve plate
Intensity, valve plate be with the waist-shaped hole on head piece A mouths and B mouths in separated two holes composition.
Further, vertical through hole is provided with beside pintle conduction hole.It can be realized manually by above-mentioned vertical through hole
Control the rotation of pintle.
Specifically, the speed probe is photoelectric encoder, the rotor of photoelectric encoder by yielding coupling with it is defeated
Shaft is connected.
Rotary actuator is integrally mounted in hydraulic transformer flow housing by the present invention, and the oil-out of pintle is equal
Cloth effectively shortens the entire length of hydraulic transformer on the same axial direction of pintle；By by valve plate and pintle
It is connected, improves the transformation ratio and transformation scope of transformer, avoid restriction loss；Master is realized using the rotation of motor drivig cylinder
The flow of dynamic control hydraulic transformer；SERVO CONTROL cooperates with sensor, improves hydraulic transformer control accuracy and response
Speed.
Brief description of the drawings
Fig. 1 is integrated model sectional view of the present invention；
Fig. 2 is pintle end view in Fig. 1；
Fig. 3 is pintle sectional view in Fig. 2；
Fig. 4 is port plate structure schematic diagram in Fig. 1；
In figure：1st, speed probe；2nd, hydraulic transformer shell；3rd, swash plate；4th, plunger；5th, cylinder body；6th, rotor；7th, it is fixed
Son；8th, valve plate；9th, rear end cap；10th, pintle；10.1, blind hole；10.2, conduction hole；10.3rd, vertical through hole；11st, liquid is swung
Pressure motor；12 motor protecgulums；13rd, support two；14th, angular transducer；15th, output shaft；16th, bearing pin；17th, support one；18th, motor
Bonnet；19th, Glais ring is rotated；20th, yielding coupling.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, a kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer, including hydraulic transformer shell 2, cylinder
Body 5, valve plate 8, plunger 4 and swash plate 3, cylinder body 5 are arranged on output shaft 15 by spline, and valve plate 8 is located at the one end of cylinder body 5 simultaneously
In sealing contact with cylinder body 5, swash plate 3 is located at the other end of cylinder body 5 and on hydraulic transformer shell 2, is provided with cylinder body 5 some
Plunger cavity, plunger 4 is arranged in plunger cavity and one end and the sliding contact of swash plate 3, in addition to rear end cap 9, rotary actuator 11
With pintle 10, the pintle 10 is the swinging axle of rotary actuator 11, and pintle 10 passes through the phase of bearing pin 16 with valve plate 8
Even, and contact face is in sealing contact, and rear end cap 9 is mounted on pintle 10 by bearing holder (housing, cover), rear end cap 9 and hydraulic transformer shell
2 sealings are connected；Three waist types are provided with valve plate 8 and match somebody with somebody chute, it is corresponding on pintle 10 to be provided with valve plate 8 three and match somebody with somebody chute
What size matched matches somebody with somebody chute, and pintle 10 is provided with blind hole 10.1 around axle center, and the nose end of blind hole is provided with conduction hole 10.2；It is described
The housing of rotary actuator 11 is assemblied on pintle 10 by motor protecgulum 12 and back cover of motor 18, and back cover of motor 18 passes through axle
Hold at the shaft shoulder of pintle 10, hydraulic oil is drained at the bearing of installation back cover of motor 18 by the conduction hole 10.2.
Three on valve plate 8 are respectively A, B, T mouth with chute, and size identical A, B, T are equally provided with pintle 10
Mouth is simultaneously corresponding one by one with A, B, T mouth on valve plate, and the A mouths on valve plate pass through the A mouths on pintle and high-pressure oil passage connects
B mouths on logical, valve plate are connected by the B mouths on pintle with load, the T mouths on valve plate by the T mouths on pintle and
Low pressure oil way connects, and with the swing of rotary actuator 11, pintle 10 is that the main shaft of rotary actuator is also swung therewith,
And the synchronous hunting of valve plate 8 is driven, realize the change of pilot angle；Due to being connected between valve plate 8 and pintle 10, and match somebody with somebody chute
Size is identical, end face seal, therefore is not in restriction loss in the rotary course of valve plate 8, substantially increases hydraulic pressure transformation
The operating efficiency of device；Due to the limitation at no rotation dead angle, therefore the swing angle of rotary actuator 11 is the rotation of valve plate 8
Gyration, so that transformation scope is wider；The blind hole 10.1 opened up at the axle center of pintle 10 realizes the loss of weight of main shaft, reduces
Its rotary inertia, improves the wobble accuracy of pintle and valve plate, and then improves the stability of output pressure；Conduction hole 10.2
Hydraulic oil can be led at bearing, realize the lubrication to bearing, improve service life of equipment；Rotary actuator integrates
Ground is arranged in hydraulic transformer flow housing, is effectively shortened the entire length of hydraulic transformer, is improved controlling organization
Integrated level and hydraulic transformer response speed.
Further, motor is integrated with hydraulic transformer shell 2, the stator 7 of the motor is arranged on hydraulic transformer
The inwall of shell 2, rotor 6 are arranged on outside cylinder body 5.
By the rotation of motor control cylinder body, the rotation of cylinder body 5 drives plunger 4 to rotate, due to sliding between plunger 4 and swash plate 3
Dynamic contact, therefore cylinder body 5, in rotary course, the volume of plunger cavity constantly changes, so as to realize hydraulic transformer output stream
The change of amount, the flow of active control hydraulic transformer can be realized using motor control cylinder body.
Further, the output end of output shaft 15 is provided with speed probe 1, and the support 1 for install sensor passes through
It is bolted on hydraulic transformer shell 2；The input of pintle 10 is provided with angular transducer 14, for install sensor
Support 2 13 is bolted on back cover of motor 18.
The rotating speed of output shaft 15 is detected by speed probe 1, the rotation of pintle 10 is detected by angular transducer 14
Angle is to detect the size of pilot angle, and data are delivered to tele-control system by the sensor, so as to improve equipment control essence
Degree and response speed.
Further, the rotary actuator 11 is servo oscillating hydraulic motor.Matched somebody with somebody by electrohydraulic servo valve to control
Flow the rotation of axle and motor spindle.
In order to further improve the sealing effectiveness of flow housing, lead between the housing and pintle 10 of rotary actuator 11
Cross rotation Glais ring 19 and realize dynamic sealing.So as to which outside oil-collecting hole is fixed when ensureing that pintle rotates.
Further, output shaft 15 is connected with the contact jaw of pintle 10 by bearing.Output shaft and pintle be not respectively by
Same drive mechanism drives rotation, so as to realize regulation output pressure and control both output flows non-interference.
As shown in figure 4, high-pressure oil passage is connected with the pipeline of B mouths with head piece A mouths due to valve plate 8, to improve valve plate
Compression strength, valve plate 8 be with the waist-shaped hole on head piece A mouths and B mouths in separated two holes composition.
As shown in figure 3, the side of the conduction hole 10.2 of pintle 10 is provided with vertical through hole 10.3.Can by above-mentioned vertical through hole
To realize the rotation of control pintle manually.
Preferably, the speed probe 1 is photoelectric encoder, the rotor of photoelectric encoder by yielding coupling 20 with
Output shaft 15 is connected.
Specific work process is as follows：
The rotation of the motor driven cylinder body 5 integrated in hydraulic transformer housing 2, cylinder body 5 pass through spline phase with output shaft 15
Even so as to drive output shaft 15 to rotate, plunger 4 in cylinder body is when cylinder body 5 rotate and the sliding contact of swash plate 3, so as to change plunger
The volume of chamber, similar to the function of a Variable plunger pump, by controlling cylinder body 5 to be rotated up to active control hydraulic transformer stream
The purpose of amount；Rotary actuator 11 is by controlling its swinging axle i.e. swing rotary of pintle 10 so as to realizing valve plate 8
Rotation, fluid are entered in plunger hole by matching somebody with somebody head piece into valve plate 8 with head piece on pintle 10, it is achieved thereby that
The assignment of traffic without restriction loss of hydraulic transformer；The rotation that the valve plate 8 of hydraulic transformer passes through pin and rotary actuator
Rotating shaft 10 is fixed, and the rotation of valve plate is controlled it is achieved thereby that the change of hydraulic transformer pilot angle using rotary actuator,
Realize the regulation of output pressure.
Claims (9)
1. a kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer, including hydraulic transformer shell (2), cylinder body (5), valve plate
(8), plunger (4) and swash plate (3), cylinder body (5) are arranged on output shaft (15) by spline, and valve plate (8) is located at cylinder body (5) one
Hold and in sealing contact with cylinder body (5), swash plate (3) is located at cylinder body (5) other end and on hydraulic transformer shell (2), cylinder
Some plunger cavities are provided with body (5), plunger (4) is arranged in plunger cavity and one end and swash plate (3) sliding contact, its feature exist
In, in addition to rear end cap (9), rotary actuator (11) and pintle (10), the pintle (10) is rotary actuator
(11) swinging axle, pintle (10) is connected with valve plate (8) by bearing pin (16), and contact face is in sealing contact, rear end cap
(9) by bearing holder (housing, cover) on pintle (10), rear end cap (9) is connected with hydraulic transformer shell (2) by bolt；Flow
Three waist types are provided with disk (8) and match somebody with somebody chute, it is corresponding on pintle (10) to be provided with valve plate (8) three and match somebody with somebody chute size phase
That matches somebody with somebody matches somebody with somebody chute, and pintle (10) is provided with blind hole (10.1) around axle center, and the nose end of blind hole is provided with conduction hole (10.2)；The pendulum
Hydrodynamic pressure motor (11) housing is assemblied on pintle (10) by motor protecgulum (12) and back cover of motor (18), back cover of motor
(18) it is arranged on by bearing at the shaft shoulder of pintle (10), after hydraulic oil is drained to installation motor by the conduction hole (10.2)
Cover at the bearing of (18).
2. electro-hydraulic integrated swash plate plunger type hydraulic transformer as claimed in claim 1, it is characterised in that hydraulic transformer shell
(2) motor is integrated with, the stator (7) of the motor is arranged on transformer case (2) inwall, and rotor (6) is arranged on cylinder body (5)
Outside.
3. electro-hydraulic integrated swash plate plunger type hydraulic transformer as claimed in claim 2, it is characterised in that output shaft (15) it is defeated
Go out end and be provided with speed probe (1), the support one (17) for install sensor is bolted on transformer case (2)
On；The input of pintle (10) is provided with angular transducer (14), and the support two (13) for install sensor is consolidated by bolt
It is scheduled on back cover of motor (18).
4. electro-hydraulic integrated swash plate plunger type hydraulic transformer as claimed in claim 3, it is characterised in that the swing hydraulic pressure horse
It is servo oscillating hydraulic motor up to (11).
5. electro-hydraulic integrated swash plate plunger type hydraulic transformer as claimed in claim 4, it is characterised in that rotary actuator
(11) dynamic sealing is realized between housing and pintle (10) by rotating Glais ring (19).
6. electro-hydraulic integrated swash plate plunger type hydraulic transformer as claimed in claim 5, it is characterised in that output shaft (15) is with matching somebody with somebody
Stream axle (10) contact jaw is connected by bearing.
7. electro-hydraulic integrated swash plate plunger type hydraulic transformer as claimed in claim 6, it is characterised in that valve plate (8) match somebody with somebody
Waist-shaped hole on head piece A mouths and B mouths two holes composition separated in being.
8. electro-hydraulic integrated swash plate plunger type hydraulic transformer as claimed in claim 7, it is characterised in that pintle (10) drains
Vertical through hole (10.3) is provided with beside hole (10.2).
9. the electro-hydraulic integrated swash plate plunger type hydraulic transformer as described in claim 1 to 8 any claim, its feature exist
In the speed probe (1) is photoelectric encoder, and the rotor of photoelectric encoder passes through yielding coupling (20) and output shaft
(15) it is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605713.4A CN107461370A (en) | 2017-07-24 | 2017-07-24 | A kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605713.4A CN107461370A (en) | 2017-07-24 | 2017-07-24 | A kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107461370A true CN107461370A (en) | 2017-12-12 |
Family
ID=60544367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710605713.4A Pending CN107461370A (en) | 2017-07-24 | 2017-07-24 | A kind of electro-hydraulic integrated swash plate plunger type hydraulic transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107461370A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533540A (en) * | 2018-04-25 | 2018-09-14 | 上海理工大学 | A kind of twin-rotor housing hydraulic transformer of swash plate rotary type |
| CN108999817A (en) * | 2018-09-11 | 2018-12-14 | 北京理工大学 | A kind of hydraulic voltage-transforming method |
| CN109372809A (en) * | 2018-12-03 | 2019-02-22 | 徐州工程学院 | A kind of swash plate plunger type hydraulic transformer supported using static pressure |
| CN110228224A (en) * | 2019-06-18 | 2019-09-13 | 苏州好特斯模具有限公司 | Small angle rotation integral type fixed plate |
| CN112377472A (en) * | 2020-11-04 | 2021-02-19 | 江苏师范大学 | Four-way hydraulic transformer with shaft flow distribution structure |
| CN113374747A (en) * | 2021-04-09 | 2021-09-10 | 哈尔滨理工大学 | Design method of swash plate plunger type hydraulic transformer buffering structure |
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| CN102434504A (en) * | 2011-12-09 | 2012-05-02 | 哈尔滨工业大学 | Hydraulic transformer with axial flow distribution |
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| CN103174689A (en) * | 2013-03-29 | 2013-06-26 | 哈尔滨工业大学 | Variable electro-hydraulic servo hydraulic transformer |
| DE102012006290A1 (en) * | 2012-03-29 | 2013-10-02 | Robert Bosch Gmbh | hydrotransformer |
| CN103967802A (en) * | 2014-05-06 | 2014-08-06 | 华中科技大学 | Plunger type hydraulic motor pump internally integrated with front-mounted pump |
| CN104832467A (en) * | 2015-05-04 | 2015-08-12 | 上海理工大学 | Double-row plunger type axial hydraulic transformer |
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| CN102434504A (en) * | 2011-12-09 | 2012-05-02 | 哈尔滨工业大学 | Hydraulic transformer with axial flow distribution |
| DE102012006290A1 (en) * | 2012-03-29 | 2013-10-02 | Robert Bosch Gmbh | hydrotransformer |
| CN103016430A (en) * | 2012-12-21 | 2013-04-03 | 哈尔滨工业大学 | Swash plate piston hydraulic transformer controlled by swing hydraulic motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533540A (en) * | 2018-04-25 | 2018-09-14 | 上海理工大学 | A kind of twin-rotor housing hydraulic transformer of swash plate rotary type |
| CN108999817A (en) * | 2018-09-11 | 2018-12-14 | 北京理工大学 | A kind of hydraulic voltage-transforming method |
| CN109372809A (en) * | 2018-12-03 | 2019-02-22 | 徐州工程学院 | A kind of swash plate plunger type hydraulic transformer supported using static pressure |
| CN109372809B (en) * | 2018-12-03 | 2024-06-18 | 徐州工程学院 | Swash plate plunger type hydraulic transformer adopting static pressure support |
| CN110228224A (en) * | 2019-06-18 | 2019-09-13 | 苏州好特斯模具有限公司 | Small angle rotation integral type fixed plate |
| CN112377472A (en) * | 2020-11-04 | 2021-02-19 | 江苏师范大学 | Four-way hydraulic transformer with shaft flow distribution structure |
| CN113374747A (en) * | 2021-04-09 | 2021-09-10 | 哈尔滨理工大学 | Design method of swash plate plunger type hydraulic transformer buffering structure |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171212 |
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| RJ01 | Rejection of invention patent application after publication |