CN109944959A - A kind of rotary electrohydraulic servo valve of spool - Google Patents
A kind of rotary electrohydraulic servo valve of spool Download PDFInfo
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- CN109944959A CN109944959A CN201711393951.XA CN201711393951A CN109944959A CN 109944959 A CN109944959 A CN 109944959A CN 201711393951 A CN201711393951 A CN 201711393951A CN 109944959 A CN109944959 A CN 109944959A
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- spool
- hole
- servo valve
- electrohydraulic servo
- holes
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Abstract
The invention discloses a kind of rotary electro-hydraulic servo valve arrangements of spool, are mainly made of driving motor, spool, valve body, sealing ring, end cap, bearing, shaft coupling, pedestal.The rotary electrohydraulic servo valve of the spool is not only simple in structure, reliable operation, and installs, is operation, easy to maintain, can effectively improve vibration excitor exciting performance, improve vibration excitor working frequency.The electrohydraulic servo valve commutating speed of the spool revolution drives the revolving speed of the spool to control by the driving motor, and thrust output is controlled by the oil pressure, flow and channel cross-sectional area of hydraulic system, and the mode for adjusting frequency and thrust output is relatively simple.
Description
Technical field
The invention belongs to technical field of hydraulic vibration more particularly to a kind of rotary electrohydraulic servo valves of spool.
Background technique
With the continuous development of the technical fields such as aerospace industry, engineering machinery and geotechnical engineering, to exciting technology and exciting
The requirement of device is also higher and higher.The entire course of exciting technology development is made a general survey of, bandwidth is increased and increases power output, always conduct
Therethrough, the development level of exciting component is even more to directly affect the development level of vibration excitor to theme.Now, the exciting in China
Although technology has biggish progress than in the past, still there is larger gap with external, mainly in the vibration excitor of high thrust
Develop aspect.
Electro-hydraulic vibration exciter is generally made of oil sources, electrohydraulic servo valve, controller etc..Input signal enters electricity by control
The oil liquid of hydraulic servo controls the movement of executive component hydraulic oil liquid, to drive the vibration for being swashed object.Frequency range depends on
In the bandwidth of servo valve, and it can produce waveform of different shapes.Because of the intrinsic advantage of hydraulic system, electro-hydraulic vibration exciter can be produced
Raw very big thrust and speed, output power, but the deficiencies such as performance is poor when frequency is high, and working frequency is low.
The core component of electro-hydraulic vibration exciter is electrohydraulic servo valve.It is small, sharp that servo valve common at present is primarily present flow
The problems such as performance of shaking is poor, and working frequency is low.
Summary of the invention
In view of the problems of the existing technology, the purpose of the present invention is to provide a kind of rotary electrohydraulic servo valve knots of spool
Structure is not only simple in structure, reliable operation, and is installed, operated, is easy to maintain, can be effectively improved vibration excitor exciting performance, be improved
Vibration excitor working frequency.
To achieve the goals above, the present invention takes following technical scheme.
Disclosed by the invention is a kind of rotary electro-hydraulic servo valve arrangement of spool, mainly by driving motor, spool, valve body,
Sealing ring, end cap, bearing, shaft coupling, pedestal composition.The driving motor and the valve body are installed on the pedestal, it is described
The spool is installed in valve body, two radial straight holes and two oblique through-holes are provided on the spool, four holes are non-intersecting, the spool
Two sides the sealing ring is installed, the spool both ends are reloaded into the bearing of the end cap by the bearing support, the bearing
Kong Zhong, the end cap are bolted with the valve body again, and the spool has the company of stretching close to described driving motor one end
Spindle is connect by the shaft coupling with the driving motor.
Further, pressure oil fuel feed hole (P), oil return hole (O), the first pressure for connecing vibrator are provided with outside the valve body
Oilhole (A), second pressure oilhole (B), P mouthfuls opposite with A mouthfuls, and O mouthfuls opposite with B mouthfuls, amounts to four oilholes.
Further, the valve body both ends are provided with seal groove and end cap positioning spigot.
Further, two radial straight holes and two oblique through-holes are provided on the spool, two straight holes are separated by a distance
Radial through-hole, two inclined holes be in the disjoint through-hole in the symmetrical two sides in straight hole longitudinal section.
Further, corresponding eight mouths of four through-holes are distributed in spool two diameters separated by a distance on the spool
To on section, and the corresponding mouth of inclined hole opens kidney slot on 90 degree of directions to intersecting with radial through-hole.
The working principle of electrohydraulic servo valve of the present invention: connecing pressure oil for the pressure oil fuel feed hole (P) of servo valve body,
Oil return hole (O) takes back road, connects the first pressure oilhole (A) of vibrator and second pressure oilhole (B) connects pressure exciting actuator, such as oil
Two chambers of cylinder drive Spool rotating by shaft coupling, when spool is relayed to when driving motor rotates under the control of frequency converter
When radial through-hole, so that P mouthfuls are connected with A mouthfuls, O mouthfuls are connected with B mouthfuls, the chamber oil inlet that actuator is connect with A mouthfuls at this time, with B mouthfuls
Another chamber oil return of connection, actuator positive action；When spool turns over 90 degree, inclined hole effect, i.e. P mouthfuls is connected with B mouthfuls, and O mouthfuls and A
Mouth conducting, the chamber oil return that actuator is connect with A mouthfuls at this time, another chamber oil inlet being connect with B mouthfuls, actuator counteragent；?
Under the action of driving motor, valve core rotation, the continuous oil inlet and oil return for switching actuator, so that actuator generates reciprocating motion.
The frequency that actuator moves back and forth is controlled by the revolving speed of spool, and the thrust of actuator is controlled by oil pressure, flow and channel cross-sectional area.
Beneficial effects of the present invention are as follows.
1, be the advantages of electrohydraulic servo valve provided by the invention it is simple and compact for structure, hydraulic circuit is unobstructed, it is not easy to
There is a phenomenon where block.
2, revolving speed control of the electrohydraulic servo valve commutating speed provided by the invention by driving motor with movable valve plug, thrust output
It is controlled by the oil pressure, flow and channel cross-sectional area of hydraulic system, adjusts frequency and thrust output is simple.
3, electrohydraulic servo valve provided by the invention only has three driving motor revolving speed, hydraulic system pressure and flow parameters,
Control System Design is simple.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the embodiment of the present invention proposes.
Fig. 2 is valve body hydraulic fluid port configuration schematic diagram.
Fig. 3 is spool oilhole configuration schematic diagram.
In figure: 1-- capping, 2-- first end cover, 3-sealing rings, 4-valve bodies, 5-spools, 6-second end covers, 7-axis
It holds, 8-logical lids, 9-shaft couplings, 10-driving motors, 11-pedestals, 12- fuel feed hole (P), 13-oil return holes (O), 14-the
One pressure oilhole (A), 15-second pressure oilholes (B).
Specific embodiment
More thorough description is made to the present invention with reference to the accompanying drawings and examples.
As shown in Fig. 1, the present invention provides a kind of rotary electrohydraulic servo valve of spool, including can adjust by Frequency Converter Control
The driving motor (10) of revolving speed, for can be rotated and internal openings guiding hydraulic oil stream to spool (5)；It is used to support spool
Bearing (7), for install bearing, connect valve body two end caps (2,6), for accommodate spool (5), with end cap (2,6) even
The valve body (4) connect is used for the sealing ring (3) of spool (5) circumferential seal, the connection connecting for driving motor (10) with spool (5)
Axis device (9), and the pedestal (11) for carrying driving motor (10) Yu valve body (4).
Pressure oil fuel feed hole (P), oil return hole (O), the first pressure for connecing vibrator are provided with outside the valve body (shown in Fig. 2)
Power oilhole (A), second pressure oilhole (B), P mouthfuls opposite with A mouthfuls, and O mouthfuls opposite with B mouthfuls, amounts to four oilholes, valve body both ends are provided with
Seal groove and end cap positioning spigot.
Two radial straight holes and two oblique through-holes are provided on the spool (shown in Fig. 3), two straight holes are to be separated by a spacing
From radial through-hole, two inclined holes be on the disjoint through-hole in the symmetrical two sides in straight hole longitudinal section, spool four through-holes it is eight corresponding
Mouth is distributed on spool two radial sections separated by a distance, and the corresponding mouth of inclined hole is square to intersecting 90 degree with radial through-hole
Kidney slot is opened upwards.
The electrohydraulic servo valve working principle are as follows: the pressure oil fuel feed hole (P) of valve body (4) is connect into pressure oil, oil return hole
(O) road is taken back, the first pressure oilhole (A) of vibrator is connect and second pressure oilhole (B) connects pressure exciting actuator, such as vibrate oil cylinder
Two chambers rotated by shaft coupling band movable valve plug (5), when spool (5) when driving motor (10) rotates under the control of frequency converter
When being relayed to radial through-hole, so that P mouthfuls are connected with A mouthfuls, O mouthfuls are connected with B mouthfuls, the chamber oil inlet that actuator is connect with A mouthfuls at this time,
Another chamber oil return being connect with B mouthfuls, actuator positive action；When spool (5) turns over 90 degree, inclined hole effect, i.e. P mouthfuls is led with B mouthfuls
Logical, O mouthfuls are connected with A mouthfuls, the chamber oil return that actuator is connect with A mouthfuls at this time, another chamber oil inlet connecting with B mouthfuls, and actuator is anti-
To movement；Under the action of driving motor (10), valve core rotation, the continuous oil inlet and oil return for switching actuator, be executes production
It is raw to move back and forth.The frequency that actuator moves back and forth is controlled by the revolving speed of spool (5), the thrust of actuator by oil pressure, flow and
Channel cross-sectional area control.
The preferred embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, several deformations can also be made, improves and substitutes, these belong to this hair
Bright protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (5)
1. a kind of rotary electrohydraulic servo valve of spool, which is characterized in that including the driving electricity by Frequency Converter Control adjustable rotational speed
Machine (10), for can be rotated and internal openings guiding hydraulic oil stream to spool (5), be used to support the bearing (7) of spool, use
In two end caps (2,6) installed bearing, connect valve body, valve body (4) for accommodating spool (5), being connect with end cap (2,6),
For the sealing ring (3) of spool (5) circumferential seal, for the shaft coupling (9) that driving motor (10) are connect with spool (5), and
Pedestal (11) for carrying driving motor (10) and valve body (4) forms.
2. the rotary electrohydraulic servo valve of a kind of spool according to claim 1, which is characterized in that on the spool (5)
Two radial straight holes and two oblique through-holes are provided with, two straight holes are radial through-hole separated by a distance, and two inclined holes are vertical in straight hole
The disjoint through-hole in the symmetrical two sides in section, corresponding eight mouths of four through-holes are distributed in separated by a distance two of spool on spool
On radial section, and the corresponding mouth of inclined hole opens kidney slot on 90 degree of directions to intersecting with radial through-hole.
3. the rotary electrohydraulic servo valve of spool as claimed in claim 2, which is characterized in that two straight holes of the spool are to be separated by
The radial straight hole of certain distance, two inclined hole are that the straight hole claims two sides disjoint through-hole.
4. the rotary electrohydraulic servo valve of spool as claimed in claim 3, which is characterized in that the corresponding mouth of the inclined hole to diameter
Intersect to through-hole and opens kidney slot on 90 degree of directions.
5. the rotary electrohydraulic servo valve of spool as described in claim 3 or 4, which is characterized in that the inclined hole and the straight hole
Corresponding eight mouths are distributed on the spool two radial sections separated by a distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711393951.XA CN109944959A (en) | 2017-12-21 | 2017-12-21 | A kind of rotary electrohydraulic servo valve of spool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711393951.XA CN109944959A (en) | 2017-12-21 | 2017-12-21 | A kind of rotary electrohydraulic servo valve of spool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109944959A true CN109944959A (en) | 2019-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711393951.XA Pending CN109944959A (en) | 2017-12-21 | 2017-12-21 | A kind of rotary electrohydraulic servo valve of spool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828439A (en) * | 2020-06-16 | 2020-10-27 | 浙大城市学院 | High-frequency hydraulic vibration exciter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9602635D0 (en) * | 1996-07-04 | 1996-07-04 | Ralf Blomgren | Valve for changing the flow direction of a fluid in pipelines |
| CN102966763A (en) * | 2012-12-06 | 2013-03-13 | 银川东方运输设备有限公司 | Rotary four-way fluid reversing valve with two spiral grooves |
| CN104334944A (en) * | 2012-04-23 | 2015-02-04 | X畅尔股份有限公司 | Environmental control systems and methods of configuring environmental control systems |
| CN105229350A (en) * | 2013-06-28 | 2016-01-06 | 北京峰迪克机械设备有限公司 | Many cleansing mediums changing valve |
| CN207777684U (en) * | 2017-12-21 | 2018-08-28 | 江西理工大学 | A kind of spool swinging electrohydraulic servo valve |
-
2017
- 2017-12-21 CN CN201711393951.XA patent/CN109944959A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9602635D0 (en) * | 1996-07-04 | 1996-07-04 | Ralf Blomgren | Valve for changing the flow direction of a fluid in pipelines |
| CN104334944A (en) * | 2012-04-23 | 2015-02-04 | X畅尔股份有限公司 | Environmental control systems and methods of configuring environmental control systems |
| CN102966763A (en) * | 2012-12-06 | 2013-03-13 | 银川东方运输设备有限公司 | Rotary four-way fluid reversing valve with two spiral grooves |
| CN105229350A (en) * | 2013-06-28 | 2016-01-06 | 北京峰迪克机械设备有限公司 | Many cleansing mediums changing valve |
| CN207777684U (en) * | 2017-12-21 | 2018-08-28 | 江西理工大学 | A kind of spool swinging electrohydraulic servo valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828439A (en) * | 2020-06-16 | 2020-10-27 | 浙大城市学院 | High-frequency hydraulic vibration exciter |
| CN111828439B (en) * | 2020-06-16 | 2022-08-09 | 浙大城市学院 | High-frequency hydraulic vibration exciter |
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