CN208474054U - A kind of embedded micro variable pump of electrohydraudic servomechanism - Google Patents
A kind of embedded micro variable pump of electrohydraudic servomechanism Download PDFInfo
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- CN208474054U CN208474054U CN201820993215.1U CN201820993215U CN208474054U CN 208474054 U CN208474054 U CN 208474054U CN 201820993215 U CN201820993215 U CN 201820993215U CN 208474054 U CN208474054 U CN 208474054U
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- variable pump
- plunger
- embedded micro
- swash plate
- shell
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Abstract
The utility model 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 cylindrical body 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 pin shaft 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 is equipped with plunger in plunger hole；Plunger base is equipped with check valve.The utility model is small in size, light-weight, improves the specific power levels of variable pump.
Description
Technical field
The utility model relates to a kind of embedded micro variable pumps of electrohydraudic servomechanism, belong to Small Plunger Pump technology
Field.
Background technique
Electrohydraudic servomechanism is a kind of installs on board the aircraft for controlling the control device of aircraft flight posture.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 connection, since the more reliability for leading to product of plug-in connection type sealing station is also difficult to improve.
Utility model content
The purpose of this utility model is to provide a kind of embedded micro variable pumps of electrohydraudic servomechanism, make variable pump
It is directly integrated in the mounting hole of electrohydraudic servomechanism, reduces the piping connection between variable pump and electrohydraudic servomechanism, and make
The overall structure of electrohydraudic servomechanism is more compact, realizes the lightweight and miniaturization target of electrohydraudic servomechanism, improves simultaneously
The reliability of electrohydraudic servomechanism, thus overcome the deficiencies in the prior art.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of embedded micro variable pump of electrohydraudic servomechanism of the utility model, the embedded micro variable pump
In the mounting hole of electrohydraudic servomechanism, the sealed circle of embedded micro variable pump is tightly connected with mounting hole, to save
The shell of conventional variable pump；Embedded micro variable pump is connected through a screw thread and is constituted by swash plate component and plunger assembly two parts
Cylindrical body；Swash plate component includes shell, and the transmission shaft through shell is equipped in shell, and transmission shaft connects through bearing and shell rotation
It connects；Transmission shaft is connected through the driving hole of pin shaft and swash plate, and the inclined-plane of swash plate, which is equipped with, matches chute；Transmission shaft lower end through ball-head cover with
Return plate connection, return plate are 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
Including cylinder body；Cylinder deck is equipped with the plunger hole being uniformly distributed along the circumference, and is equipped with plunger 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 in centre bore by spring, spool
The variable regulating mechanism that pump is constituted with valve pocket realizes that the flow of pump is adjusted.
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, is equipped with spherical hollow space 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, the utility model is compared with prior art, the utility model is watched electro-hydraulic
It takes and adds a mounting hole on the shell at drive shaft, embedded micro variable pump is mounted in mounting hole, is eliminated
The shell of conventional variable pump, reduces number of parts, keeps variable pump volume smaller, weight is lighter, reduces the processing of variable pump
Cost.Due to directly integrating variable pump on electrohydraudic servomechanism, piping connection and connector can be also reduced, variable pump is greatly improved
The leakproofness connecting with electrohydraudic servomechanism improves the reliability of electrohydraudic servomechanism.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
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 the figure, it is marked as 1- valve pocket, 2- spool, 3- cylinder body, 4- check valve, 5- plunger, 6- spring, 7- ball-head cover, 8- are sliding
Boots, 9- swash plate, 10- bearing, 11- pin shaft, 12- shell, 13- transmission shaft, 14- return plate, 15- match chute.
Specific embodiment
The utility model 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 utility model, the embedded micro variable pump
In the mounting hole of electrohydraudic servomechanism, the sealed circle of embedded micro variable pump is tightly connected with mounting hole, to save
The shell of conventional variable pump；As shown in Figure 1, embedded micro variable pump is to pass through spiral shell by swash plate component and plunger assembly two parts
The cylindrical body that line connects and composes；Swash plate component includes shell 12, and the transmission shaft 13 through shell 12, transmission shaft are equipped in shell 12
13 are rotatablely connected through bearing 10 and shell 12；Transmission shaft 13 is connect through pin shaft 11 with the driving hole of swash plate 9, on the inclined-plane of swash plate 9
Equipped 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 cunning being uniformly distributed along the circumference
Boots 8；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 and is uniformly distributed along the circumference
Plunger hole, plunger 5 is equipped in plunger hole；5 bottom of plunger is equipped with check valve 4.3 center of cylinder body is equipped with centre bore, in centre bore
Equipped with the variable regulating mechanism for being made of pump spring 6, spool 2 and valve pocket 1, realize that the flow of pump is adjusted.It is circular arc with chute 15
Connected in star, arc angle is less than 180 °.It is equipped with through-hole among piston shoes 8, is equipped with spherical hollow space 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 the check valve matched in chute 15 and plunger 5 and cylinder body 3 on swash plate 9
4 jointly complete.When transmission shaft 13 drive swash plate 9 rotate when, due to swash plate 9 be it is tilted-putted, cylinder body 3 be it is fixed, lead to
Crossing swash plate 9 drives plunger 5 to do linear reciprocating motion in the plunger hole of cylinder body 3.Swash plate is exactly in when plunger 5 stretches out
9 are provided with 15 side of chute, and plunger 5 enters oil suction stroke.Match chute 15 on oil inlet and 9 oil suction area of swash plate on piston shoes 8
It communicates, hydraulic oil enters plunger cavity by this channel.At this point, check valve 4 is under the action of hydraulic coupling and spring force in closing
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 opening with chute on swash plate 9, therefore 9 surface of swash plate blocks 8 upper oil hole of piston shoes, thus 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 cracking 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 and stroking mechanism cooperating, state is oil suction volume variable displacement pump.
The oil suction volume that embedded micro variable pump is pumped using pressure feedback throttle valve (stroking mechanism) control of pump output,
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
The composition such as spring 6.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 valve core 2 be 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 is stablized in setting.Similarly, as system pressure decline, stroking mechanism make pump output flow increase, operating pressure go up
To setting.By the pretightning force of adjustment spring 6, i.e., the variable point pressure of adjustable 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, to save biography
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
Cylindrical body；Swash plate component includes shell (12)；The transmission shaft (13) through shell (12), transmission shaft (13) are equipped in shell (12)
It is rotatablely connected through bearing (10) and shell (12)；Transmission shaft (13) is connect through pin shaft (11) with the driving hole of swash plate (9), swash plate
(9) inclined-plane, which is equipped with, matches chute (15)；Transmission shaft (13) lower end is connect through ball-head cover (7) with return plate (14), return plate
(14) piston shoes (8) being uniformly distributed along the circumference are equipped with；Piston shoes (8) top surface and the inclined-plane of swash plate (9) are 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 is equipped with plunger (5) in plunger hole；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 the variable regulating mechanism that pump is made of spring (6), spool (2) and valve pocket (1) in centre bore,
Realize that the flow of pump is adjusted.
3. the embedded micro variable pump of electrohydraudic servomechanism according to claim 1, it is characterised in that: described to match chute
It (15) is 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) intermediate to be equipped with through-hole, 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
It (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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820993215.1U CN208474054U (en) | 2018-06-26 | 2018-06-26 | A kind of embedded micro variable pump of electrohydraudic servomechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820993215.1U CN208474054U (en) | 2018-06-26 | 2018-06-26 | A kind of embedded micro variable pump of electrohydraudic servomechanism |
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| Publication Number | Publication Date |
|---|---|
| CN208474054U true CN208474054U (en) | 2019-02-05 |
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ID=65215251
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820993215.1U Active CN208474054U (en) | 2018-06-26 | 2018-06-26 | A kind of embedded micro variable pump of electrohydraudic servomechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644082A (en) * | 2018-06-26 | 2018-10-12 | 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 CN201820993215.1U patent/CN208474054U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644082A (en) * | 2018-06-26 | 2018-10-12 | 贵州航天控制技术有限公司 | A kind of embedded micro variable pump of electrohydraudic servomechanism |
| CN108644082B (en) * | 2018-06-26 | 2024-04-23 | 贵州航天控制技术有限公司 | Embedded miniature variable displacement pump for electrohydraulic servo mechanism |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200730 Address after: 550009, Honghe Road, Guiyang economic and Technological Development Zone, Guizhou 7, China Co-patentee after: JIANGNAN ELECTROMECHANICAL DESIGN Research Institute Patentee after: GUIZHOU AEROSPACE CONTROL TECHNOLOGY Co.,Ltd. Address before: 550025 Honghe Road, Huaxi District, Guiyang, Guizhou 7 Patentee before: GUIZHOU AEROSPACE CONTROL TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |