CN108644082A - A kind of embedded micro variable pump of electrohydraudic servomechanism - Google Patents
A kind of embedded micro variable pump of electrohydraudic servomechanism Download PDFInfo
- Publication number
- CN108644082A CN108644082A CN201810670399.2A CN201810670399A CN108644082A CN 108644082 A CN108644082 A CN 108644082A CN 201810670399 A CN201810670399 A CN 201810670399A CN 108644082 A CN108644082 A CN 108644082A
- Authority
- CN
- China
- Prior art keywords
- variable pump
- plunger
- embedded micro
- swash plate
- shell
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 239000011796 hollow space material Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 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
- F04B1/14—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 stationary cylinders
- F04B1/16—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 stationary cylinders having two or more sets of cylinders or pistons
-
- 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
- F04B1/14—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 stationary cylinders
- F04B1/141—Details or component parts
-
- 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
- F04B1/26—Control
- F04B1/28—Control of machines or pumps with stationary cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of embedded micro variable pump of electrohydraudic servomechanism, the embedded micro variable pump is located in the mounting hole of electrohydraudic servomechanism, and the sealed circle of embedded micro variable pump is tightly connected with mounting hole；Embedded micro variable pump is to be connected through a screw thread the cylinder constituted by swash plate component and plunger assembly two parts；Swash plate component includes shell；The transmission shaft through shell is equipped in shell, transmission shaft is rotatablely connected through bearing and shell；Transmission shaft is connected through the driving hole of axis pin and swash plate, and the inclined-plane of swash plate, which is equipped with, matches chute；Transmission shaft lower end is connect through ball-head cover with return plate, and return plate is equipped with the piston shoes being uniformly distributed along the circumference；Piston shoes top surface and the inclined-plane of swash plate are slidably connected；Plunger assembly includes cylinder body；Cylinder deck is equipped with the plunger hole being uniformly distributed along the circumference, and plunger is equipped in plunger hole；Plunger base is equipped with check valve.The present invention is small, light-weight, improves the specific power levels of variable pump.
Description
Technical field
The present invention relates to a kind of embedded micro variable pumps of electrohydraudic servomechanism, belong to Small Plunger Pump technology neck
Domain.
Background technology
Electrohydraudic servomechanism is a kind of control device installed and be used to control aircraft flight posture on board the aircraft.Cause
This, the volume and weight of electrohydraudic servomechanism directly affect the performance of aircraft.Variable pump is main in electrohydraudic servomechanism
Component.
Existing market variable pump on sale is since volume is big, can only be using the plug-in mode and electro-hydraulic servo machine of flanged joint
Structure connects, since the more reliability for leading to product of plug-in connection type sealing station is also difficult to improve.
Invention content
The purpose of the present invention is to provide a kind of embedded micro variable pumps of electrohydraudic servomechanism, keep variable pump direct
It is integrated in the mounting hole of electrohydraudic servomechanism, reduces the piping connection between variable pump and electrohydraudic servomechanism, and make electro-hydraulic
The overall structure of servo mechanism is compacter, realizes lightweight and the miniaturization target of electrohydraudic servomechanism, while improving electro-hydraulic
The reliability of servo mechanism, to overcome the deficiencies in the prior art.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of embedded micro variable pump of electrohydraudic servomechanism of the present invention, the embedded micro variable pump are located at electro-hydraulic
In the mounting hole of servo mechanism, the sealed circle of embedded micro variable pump is tightly connected with mounting hole, to save conventional variable
The shell of pump；Embedded micro variable pump is to be connected through a screw thread the cylinder constituted by swash plate component and plunger assembly two parts
Body；Swash plate component includes shell, and the transmission shaft through shell is equipped in shell, and transmission shaft is rotatablely connected through bearing and shell；It passes
Moving axis is connected through the driving hole of axis pin and swash plate, and the inclined-plane of swash plate, which is equipped with, matches chute；Transmission shaft lower end is through ball-head cover and backhaul
Disk connects, and return plate is equipped with the piston shoes being uniformly distributed along the circumference；Piston shoes top surface and the inclined-plane of swash plate are slidably connected；Plunger assembly includes
Cylinder body；Cylinder deck is equipped with the plunger hole being uniformly distributed along the circumference, and plunger is equipped in plunger hole；Plunger base is equipped with check valve.
In aforementioned embedded micro variable pump, the cylinder center is equipped with centre bore, is equipped with by spring, spool in centre bore
The variable regulating mechanism that pump is constituted with valve pocket, realizes the flow-rate adjustment of pump.
In aforementioned embedded micro variable pump, the chute of matching is circular groove, and arc angle is less than 180 °.
In aforementioned embedded micro variable pump, it is equipped with through-hole among the piston shoes, spherical hollow space is equipped in through-hole.
In aforementioned embedded micro variable pump, the plunger is tubular structure, and tubulose one end is bulb shape, the bulb of plunger
It is slidably connected with the spherical hollow space of piston shoes.
By adopting the above-described technical solution, compared with prior art, the present invention the present invention is driven in electrohydraudic servomechanism
A mounting hole is added on shell at moving axis, and embedded micro variable pump is mounted in mounting hole, conventional variable is eliminated
The shell of pump, reduces number of parts, makes variable pump volume smaller, and weight is lighter, reduces the processing cost of variable pump.Due to
Directly variable pump is integrated on electrohydraudic servomechanism, can also reduce piping connection and connector, variable pump is greatly improved and is watched with electro-hydraulic
The leakproofness for taking mechanism connection, improves the reliability of electrohydraudic servomechanism.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the axonometric drawing of Fig. 1；
Fig. 3 is the structural schematic diagram of plunger assembly；
Fig. 4 is the schematic diagram for matching chute on swash plate；
Fig. 5 is the axonometric drawing of swash plate.
In figure label for：1- valve pockets, 2- spools, 3- cylinder bodies, 4- check valves, 5- plungers, 6- springs, 7- ball-head covers, 8- are slided
Boots, 9- swash plates, 10- bearings, 11- axis pins, 12- shells, 13- transmission shafts, 14- return plates, 15- match chute.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and examples.
A kind of embedded micro variable pump of electrohydraudic servomechanism of the present invention, the embedded micro variable pump are located at
In the mounting hole of electrohydraudic servomechanism, the sealed circle of embedded micro variable pump is tightly connected with mounting hole, to save tradition
The shell of variable pump；As shown in Figure 1, embedded micro variable pump is connected by screw thread by swash plate component and plunger assembly two parts
Connect the cylinder of composition；Swash plate component includes shell 12, and the transmission shaft 13 through shell 12 is equipped in shell 12, and transmission shaft 13 passes through
Bearing 10 is rotatablely connected with shell 12；Transmission shaft 13 is connect through axis pin 11 with the driving hole of swash plate 9, and the inclined-plane of swash plate 9 is equipped with
With chute 15；13 lower end of transmission shaft is connect through ball-head cover 7 with return plate 14, and return plate 14 is equipped with the piston shoes 8 being uniformly distributed along the circumference；
8 top surface of piston shoes and the inclined-plane of swash plate 9 are slidably connected；Plunger assembly includes cylinder body 3；3 top surface of cylinder body is equipped with the column being uniformly distributed along the circumference
Consent, plunger hole is interior to be equipped with plunger 5；5 bottom of plunger is equipped with check valve 4.3 center of cylinder body is equipped with centre bore, is equipped in centre bore
The variable regulating mechanism that pump is made of spring 6, spool 2 and valve pocket 1, realizes the flow-rate adjustment of pump.It is arc-shaped recessed with chute 15
Slot, arc angle are less than 180 °.It is equipped with through-hole among piston shoes 8, spherical hollow space is equipped in through-hole.Plunger 5 is tubular structure, tubulose
One end is bulb shape, and the spherical hollow space of the bulb and piston shoes 8 of plunger 5 is slidably connected.
Embodiment
This example is as depicted in figs. 1 and 2.Mainly by cylinder body 3, swash plate 5, return plate 14, transmission shaft 13, plunger 5, spring, axis
Hold 10 equal compositions.
The flow of embedded micro variable pump is by matching chute 15 and the check valve in plunger 5 and cylinder body 3 on swash plate 9
4 jointly complete.When transmission shaft 13 drives swash plate 9 to rotate, since swash plate 9 is tilted-putted, cylinder body 3 is fixed, is led to
Crossing swash plate 9 drives plunger 5 to do linear reciprocating motion in the plunger hole of cylinder body 3.Exactly it is in swash plate when plunger 5 stretches out
9 are provided with 15 side of chute, and plunger 5 enters oil suction stroke.Oil inlet on piston shoes 8 matches chute 15 in 9 oil suction area of swash plate
It communicates, hydraulic oil enters plunger cavity by this channel.It is closed at this point, check valve 4 is under the action of hydraulic coupling and spring force
State.When plunger 5 is compressed into cylinder body 3, swash plate 9 is exactly in without with 15 side of chute, plunger 5 enters oil extraction stroke.
At this time due to not opened with chute on swash plate 9, therefore 9 surface of swash plate blocks 8 upper oil hole of piston shoes, to formed one by plunger 5,
The sealed chamber that piston shoes 8, swash plate 9 form.With the continuous rotation of transmission shaft 13, plunger 5 is constantly mobile, hydraulic oil in plunger cavity
Pressure will constantly increase, when pressure reaches the Opening pressure of check valve 4, check valve 4 in cylinder body 3 is opened, insertion declines
High pressure oil is discharged in type variable pump.Swash plate 9 is shown in Fig. 4 and Fig. 5 with 15 structure of chute.
When without stroking mechanism, when embedded micro variable pump can work independently, working condition is constant displacement pump.When embedded
When miniature variable pump is with stroking mechanism cooperating, state pumps for oil suction volume variable displacement.
The pressure feedback throttle valve that embedded micro variable pump is exported using pump（Stroking mechanism）The oil suction volume of pump is controlled,
Realize the oil suction volume variable displacement of plunger pump.The pump fed back by the aperture on valve pocket 1 on the cascaded surface for acting on spool 2 with
Spring force compares, and the openings of sizes of control orifice is carried out with this, to control the oil suction flow of pump, reaches control insertion and declines
The purpose of type variable pump variable.
Stroking mechanism is Direct Action Type throttle-valve structure, as shown in Figures 1 to 3, mainly by spool 2,1 and of valve pocket in cylinder body 3
Springs 6 etc. form.Variable pump and stroking mechanism realize flush type mounting structure, when the output flow of variable pump is excessive, can cause
System pressure Ps increases, and when pump discharge pressure Ps can overcome the set pressure of spring 6, spring 6 starts to compress, and pushes spool 2
It moves upwards, the valve port flow area on spool 2 starts to reduce, and the hydraulic oil flowed into cylinder body 3 is also reduced therewith.When system pressure
When power reaches zero flow pressure force, the valve port of control spool 2 will be fully off, at this point, there is no hydraulic oil to enter in cylinder body 3
Portion, cylinder body 3 is interior to be in vacuum state, and the output flow pumped at this time is zero, thus the operating pressure pumped also decreases.Work as spool
When hydraulic coupling on 2 cascaded surfaces is just equal to the pretightning force of spring 6,2 stop motion of spool, multivariable process terminates, the work of pump
Pressure stability is in setting.Similarly, as system pressure declines, stroking mechanism makes the output flow of pump increase, operating pressure rise
To setting.Pass through the pretightning force of adjustment spring 6, you can adjust the variable point pressure of pump.
Claims (5)
1. a kind of embedded micro variable pump of electrohydraudic servomechanism, it is characterised in that：Embedded micro variable pump position
In in the mounting hole of electrohydraudic servomechanism, the sealed circle of embedded micro variable pump is tightly connected with mounting hole, is passed to save
The shell of system variable pump；Embedded micro variable pump is connected through a screw thread and is constituted by swash plate component and plunger assembly two parts
Cylinder；Swash plate component includes shell（12）；Shell（12）Interior be equipped with runs through shell（12）Transmission shaft（13）, transmission shaft（13）
Through bearing（10）With shell（12）Rotation connection；Transmission shaft（13）Through axis pin（11）With swash plate（9）Driving hole connection, swash plate
（9）Inclined-plane be equipped with match chute（15）；Transmission shaft（13）Lower end is through ball-head cover（7）With return plate（14）Connection, return plate
（14）It is equipped with the piston shoes being uniformly distributed along the circumference（8）；Piston shoes（8）Top surface and swash plate（9）Inclined-plane be slidably connected；Plunger assembly includes
Cylinder body（3）；Cylinder body（3）Top surface is equipped with the plunger hole being uniformly distributed along the circumference, and plunger is equipped in plunger hole（5）；Plunger（5）Bottom is equipped with
Check valve（4）.
2. the embedded micro variable pump of electrohydraudic servomechanism according to claim 1, it is characterised in that：The cylinder body
（3）Center is equipped with centre bore, is equipped with by spring in centre bore（6）, spool（2）And valve pocket（1）The variable regulating mechanism of pump is constituted,
Realize the flow-rate adjustment of pump.
3. the embedded micro variable pump of electrohydraudic servomechanism according to claim 1, it is characterised in that：It is described to match chute
（15）For circular groove, arc angle is less than 180 °.
4. the embedded micro variable pump of electrohydraudic servomechanism according to claim 1, it is characterised in that：The piston shoes
（8）Centre is equipped with through-hole, and spherical hollow space is equipped in through-hole.
5. the embedded micro variable pump of electrohydraudic servomechanism according to claim 1, it is characterised in that：The plunger
（5）For tubular structure, tubulose one end is bulb shape, plunger（5）Bulb and piston shoes（8）Spherical hollow space be slidably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810670399.2A CN108644082B (en) | 2018-06-26 | 2018-06-26 | Embedded miniature variable displacement pump for electrohydraulic servo mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810670399.2A CN108644082B (en) | 2018-06-26 | 2018-06-26 | Embedded miniature variable displacement pump for electrohydraulic servo mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108644082A true CN108644082A (en) | 2018-10-12 |
| CN108644082B CN108644082B (en) | 2024-04-23 |
Family
ID=63753730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810670399.2A Active CN108644082B (en) | 2018-06-26 | 2018-06-26 | Embedded miniature variable displacement pump for electrohydraulic servo mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108644082B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH269288A (en) * | 1948-12-31 | 1950-06-30 | Schweizerische Lokomotiv | Axial piston pump with variable delivery rate. |
| DE4029510A1 (en) * | 1989-09-18 | 1991-03-28 | Zahnradfabrik Friedrichshafen | Axial piston pump for driving dynamo - has regulating piston for rapid response to loading variations |
| CN1250846A (en) * | 1999-10-20 | 2000-04-19 | 李世六 | Axial plunger type hydraulic variable displacement pump or speed-variable motor |
| CN101081528A (en) * | 2006-06-02 | 2007-12-05 | 萱场工业株式会社 | Concrete agitating drum driving device |
| CN201096061Y (en) * | 2007-11-01 | 2008-08-06 | 卢堃 | 50Mpa self complementing type electrohydraulic proportional control axial plunger variable pump |
| CN204357643U (en) * | 2014-12-11 | 2015-05-27 | 浙江大学 | A kind of swash plate rotary internal Flat valve axial piston pump |
| CN208474054U (en) * | 2018-06-26 | 2019-02-05 | 贵州航天控制技术有限公司 | A kind of embedded micro variable pump of electrohydraudic servomechanism |
-
2018
- 2018-06-26 CN CN201810670399.2A patent/CN108644082B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH269288A (en) * | 1948-12-31 | 1950-06-30 | Schweizerische Lokomotiv | Axial piston pump with variable delivery rate. |
| DE4029510A1 (en) * | 1989-09-18 | 1991-03-28 | Zahnradfabrik Friedrichshafen | Axial piston pump for driving dynamo - has regulating piston for rapid response to loading variations |
| CN1250846A (en) * | 1999-10-20 | 2000-04-19 | 李世六 | Axial plunger type hydraulic variable displacement pump or speed-variable motor |
| CN101081528A (en) * | 2006-06-02 | 2007-12-05 | 萱场工业株式会社 | Concrete agitating drum driving device |
| CN201096061Y (en) * | 2007-11-01 | 2008-08-06 | 卢堃 | 50Mpa self complementing type electrohydraulic proportional control axial plunger variable pump |
| CN204357643U (en) * | 2014-12-11 | 2015-05-27 | 浙江大学 | A kind of swash plate rotary internal Flat valve axial piston pump |
| CN208474054U (en) * | 2018-06-26 | 2019-02-05 | 贵州航天控制技术有限公司 | A kind of embedded micro variable pump of electrohydraudic servomechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108644082B (en) | 2024-04-23 |
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