CN204538882U - A kind of electromechanical actuator of redundance - Google Patents
A kind of electromechanical actuator of redundance Download PDFInfo
- Publication number
- CN204538882U CN204538882U CN201520118531.0U CN201520118531U CN204538882U CN 204538882 U CN204538882 U CN 204538882U CN 201520118531 U CN201520118531 U CN 201520118531U CN 204538882 U CN204538882 U CN 204538882U
- Authority
- CN
- China
- Prior art keywords
- lvdt
- housing
- actuator
- redundance
- electromechanical actuator
- 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.)
- Active
Links
Landscapes
- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model provides a kind of electromechanical actuator of redundance, and comprise actuator housing, be arranged at ball screw assembly, in actuator housing and multiple LVDT, ball screw assembly, comprises ball-screw and feed screw nut; Multiple LVDT includes LVDT housing and in LVDT housing and along the iron core moved axially of LVDT housing; Wherein multiple LVDT housing is fixedly installed on the inwall of actuator housing, and extends along the axis of actuator housing, and at least one of multiple LVDT housing is to axially directed along actuator housing of feed screw nut.By multiple LVDT being fixedly installed on the inwall of actuator housing, the iron core of LVDT and the centre-to-centre spacing of ball-screw can be reduced, effectively improving the rigidity of structure and the stability of the electromechanical actuator of this redundance; Multiple LVDT is arranged in actuator housing simultaneously simultaneously, and the redundance that can realize electromechanical actuator is installed, and can carry out interpretation to LVDT, enhances the reliability that electromechanical actuator is measured.
Description
Technical field
The utility model relates to actuator field, in particular to a kind of electromechanical actuator of redundance.
Background technology
Electromechanical coupling system is the important flight control mechanism being applied to aerospace craft, and the development of electromechanical servo system is rapid, and obtained the checking of a lot of examples of many successful, due to the superiority that electromechanical servo is natural, the development prospect of electromechanical servo can be openr from now on.
Electromechanical coupling system mainly comprises servomotor and transmission mechanism etc.Wherein transmission mechanism is mainly used in bearing load, carry-over moment.In current servo transmission mechanism, being most widely used of ball-screw, ball-screw is rectilinear motion by convert rotational motion, and the electromechanical actuator of redundance wherein just must be relied on to realize the conversion of this motion.
LVDT (Linear Variable Differential Transformer) is linear variable difference transformer, belongs to linear displacement transducer, has generally been applied in space industry electromechanical actuator linear movement measuring at present.The main mounting means of current LVDT is built in leading screw or is bundled in actuator hull outside.And LVDT is built in, and the mode of leading screw is installed, difficulty of processing is larger, and limited with the diameter of axle in leading screw; The mode being bundled in actuator hull outside can cause LVDT and leading screw centre-to-centre spacing comparatively large, affects rigidity and the stability of structure.And above-mentioned mounting means, the redundance that cannot realize LVDT is installed, and so just cannot complete transducer interpretation.
Utility model content
The utility model aims to provide a kind of electromechanical actuator of redundance, the technical problem that the redundance that cannot realize LVDT to solve electromechanical actuator of the prior art is installed.
The utility model provides a kind of electromechanical actuator of redundance, comprising: actuator housing; Ball screw assembly, comprises ball-screw and feed screw nut, and ball screw assembly, is arranged in actuator housing; Multiple LVDT, multiple LVDT include LVDT housing and in LVDT housing and along the iron core moved axially of LVDT housing; Wherein multiple LVDT housing is fixedly installed on the inwall of actuator housing, and extends along the axis of actuator housing, and at least one of multiple LVDT housing is to axially directed along actuator housing of feed screw nut.
Further, multiple LVDT is three or four.
Further, the periphery wall of operating bar is provided with arc groove, and the outer wall of LVDT housing is placed in arc groove axially directed along actuator housing of operating bar.
Further, the electromechanical actuator of redundance comprises the end cap of the end being fixed on actuator housing.
Further, the electromechanical actuator of redundance also comprises operating bar, and operating bar comprises the stiff end be fixedly connected with feed screw nut and the external part stretching out end cap.
Further, end cap is stretched out in one end of iron core, and is connected by connecting rod with the external part of operating bar.
Further, operating bar is socketed in the outer wall of feed screw nut.
Further, the periphery wall of operating bar is provided with support ring.
Further, the outer wall of actuator housing is fixedly installed electric connector, and electric connector is electrically connected with LVDT.
According to the electromechanical actuator of redundance of the present utility model, multiple LVDT is fixedly installed on the inwall of actuator housing, the iron core of LVDT and the centre-to-centre spacing of ball-screw can be reduced, effectively improve the rigidity of structure and the stability of the electromechanical actuator of this redundance; Multiple LVDT is arranged in actuator housing simultaneously simultaneously, and the redundance that can realize electromechanical actuator is installed, and can carry out interpretation to LVDT, enhances the reliability that electromechanical actuator is measured.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the electromechanical actuator of redundance of the present utility model;
Fig. 2 shows the A-A cross-sectional schematic of Fig. 1;
Fig. 3 shows the B-B cross-sectional schematic of Fig. 2;
Fig. 4 shows the right view of Fig. 1.
Marginal data:
10, actuator housing; 21, ball-screw; 23, feed screw nut; 3, LVDT; 31, LVDT housing; 33, iron core; 40, end cap; 50, operating bar; 60, connecting rod; 70, support ring; 80, electric connector.
Embodiment
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Figure 1 to Figure 2, the utility model discloses a kind of electromechanical actuator of redundance.The electromechanical actuator of this redundance comprises: actuator housing 10, be arranged at the secondary and multiple LVDT 3 of ball-screw 21 in actuator housing 10; Ball-screw 21 is secondary, comprises ball-screw 21 and feed screw nut 23; Multiple LVDT 3 includes LVDT housing 31 and in LVDT housing 31 and along the iron core 33 moved axially of LVDT housing 31; Wherein multiple LVDT housing 31 is fixedly installed on the inwall of actuator housing 10, and extends along the axis of actuator housing 10, and at least one of multiple LVDT housing 31 is to axially directed along actuator housing 10 of feed screw nut 23.According to the electromechanical actuator of redundance of the present utility model, multiple LVDT 3 is fixedly installed on the inwall of actuator housing 10, the iron core 33 of LVDT 3 and the centre-to-centre spacing of ball-screw 21 can be reduced, effectively improve the rigidity of structure and the stability of the electromechanical actuator of this redundance; Multiple LVDT 3 is arranged in actuator housing 10 simultaneously simultaneously, and the redundance realizing electromechanical actuator is installed, and the measurement result of multiple LVDT 3 compares mutually, realizes interpretation, enhances the reliability that electromechanical actuator is measured.
Particularly, refer to Fig. 2, actuator housing 10 is in hollow column structure, and the inwall of actuator housing 10 has the mounting groove that many are installed LVDT 3, and many mounting grooves are parallel to each other, and extend along the axis of actuator housing 10; Multiple LVDT housing 3131 is placed in the mounting groove of actuator housing 10 respectively, and LVDT housing 31 is extended along the axis of actuator housing 10.The lateral cross section of mounting groove and the lateral cross section of LVDT housing 31 adapt.In the present embodiment, actuator housing 10 and LVDT housing 31 are fixed by dismountable modes such as bolts; In other implementations, actuator housing 10 and LVDT housing 31 can also be fixed by the mode do not dismantled such as welding.
Ball-screw 21 pair is placed in actuator housing 10, and ball-screw 21 pair comprises ball-screw 21, feed screw nut 23 and leading screw steel ball.After ball-screw 21 pair assembles, should smooth running, there is not the phenomenons such as clamping stagnation, astringent, motion is not smooth.Multiple LVDT 3 is all arranged in actuator housing 10 with ball-screw 21, effectively can reduce the centre-to-centre spacing of each LVDT 3 and ball-screw 21, effectively improve the rigidity of structure and the stability of this actuator; And extend due to the axis of LVDT housing 31 along actuator housing 10, axially directed along actuator housing 10 of LVDT housing 31 pairs of feed screw nuts 23.
The end cap 40 that the electromechanical actuator of redundance of the present utility model comprises the end being fixed on actuator housing 10 and the operating bar 50 be fixed on feed screw nut 23.End cap 40 is provided with multiple through hole, and operating bar 50 comprises the external part of the link be fixedly connected with feed screw nut 23 and one of them through hole stretching out end cap 40.In the present embodiment, the link of operating bar 50 is socketed on the portion perimeter wall of feed screw nut 23, and is bolted; In other implementations, the link of operating bar 50 welds or one-body molded design with feed screw nut 23.The iron core 33 of LVDT 3 is arranged in LVDT housing 31 and also can moves linearly in LVDT housing 31, the iron core 33 of each LVDT 3 stretches out through hole corresponding with it on end cap 40, and the iron core 33 of each LVDT 3 is fixedly connected with at the outer connecting rod 60 (referring to Fig. 4) that passes through of end cap 40 with the external part of operating bar 50, with follow when operating bar 50 feed screw nut 23 do rectilinear motion time, operating bar 50 can drive the iron core 33 of all LVDT 3 to do rectilinear motion in LVDT housing 31, to detect related data, realize the interpretation of LVDT 3.
Incorporated by reference to see Fig. 3, in the present embodiment, LVDT 3 is set to three, is distributed on the inside of actuator housing 10.In other implementations, LVDT 3 can be two or four, and is distributed on the inwall of actuator housing 10.Multiple LVDT3 is arranged at the inwall of an actuator housing 10 simultaneously, and with when one of them LVDT 3 breaks down, remaining LVDT 3 can work on, and improves the reliability of this electromechanical actuator.
In order to reduce the friction between the periphery wall of operating bar 50 and actuator housing 10 and LVDT housing 31, the periphery wall of operating bar 50 is provided with multiple support ring 70.In the present embodiment, the periphery wall of operating bar 50 arranges two support rings 70.
The outer wall of actuator housing 10 is fixedly installed electric connector 80, electric connector 80 is electrically connected with LVDT 3.Particularly, actuator housing 10 has installation through hole, electric connector 80 passes with the connection wire of LVDT 3 and installs through hole.
Incorporated by reference to see Fig. 3, in order to realize the guiding of operating bar 50, the periphery wall of the stiff end of operating bar 50 has many gathering sills suitable with the mounting groove on actuator housing 10, LVDT housing 31 is arranged in the container cavity of gathering sill and mounting groove formation, to realize operating bar 50 with LVDT housing 31 for guiding is moved along actuator housing 10.Operating bar 50 is guiding with LVDT housing 31, easy for installation, and can save installing space.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
According to the electromechanical actuator of redundance of the present utility model, multiple LVDT 3 is fixedly installed on the inwall of actuator housing 10, the iron core 33 of LVDT 3 and the centre-to-centre spacing of ball-screw 21 can be reduced, effectively improve the rigidity of structure and the stability of the electromechanical actuator of this redundance; Multiple LVDT 3 is arranged in actuator housing 10 simultaneously simultaneously, and the redundance that can realize electromechanical actuator is installed, and can carry out interpretation to LVDT 3, enhances the reliability that electromechanical actuator is measured.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (9)
1. an electromechanical actuator for redundance, is characterized in that, comprising:
Actuator housing;
Ball screw assembly, comprises ball-screw and feed screw nut, and described ball screw assembly, is arranged in described actuator housing;
Multiple LVDT, described multiple LVDT include LVDT housing and in described LVDT housing and along the iron core moved axially of described LVDT housing; Wherein
Described multiple LVDT housing is fixedly installed on the inwall of described actuator housing, and extends along the axis of described actuator housing, and at least one of described multiple LVDT housing is to axially directed along described actuator housing of described feed screw nut.
2. the electromechanical actuator of redundance according to claim 1, is characterized in that,
Described multiple LVDT is three or four.
3. the electromechanical actuator of redundance according to claim 1, is characterized in that,
The periphery wall of described operating bar is provided with arc groove, and the outer wall of described LVDT housing is placed in described arc groove axially directed along described actuator housing of described operating bar.
4. the electromechanical actuator of redundance according to claim 1, is characterized in that,
The electromechanical actuator of described redundance comprises the end cap of the end being fixed on described actuator housing.
5. the electromechanical actuator of redundance according to claim 4, is characterized in that,
The electromechanical actuator of described redundance also comprises operating bar, and described operating bar comprises the stiff end be fixedly connected with described feed screw nut and the external part stretching out described end cap.
6. the electromechanical actuator of redundance according to claim 5, is characterized in that,
Described end cap is stretched out in one end of described iron core, and is connected by connecting rod with the external part of described operating bar.
7. the electromechanical actuator of redundance according to claim 5, is characterized in that,
Described operating bar is socketed in the outer wall of described feed screw nut.
8. the electromechanical actuator of redundance according to claim 5, is characterized in that,
The periphery wall of described operating bar is provided with support ring.
9. the electromechanical actuator of redundance according to claim 1, is characterized in that,
The outer wall of described actuator housing is fixedly installed electric connector, and described electric connector is electrically connected with described LVDT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118531.0U CN204538882U (en) | 2015-02-27 | 2015-02-27 | A kind of electromechanical actuator of redundance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118531.0U CN204538882U (en) | 2015-02-27 | 2015-02-27 | A kind of electromechanical actuator of redundance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204538882U true CN204538882U (en) | 2015-08-05 |
Family
ID=53752840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520118531.0U Active CN204538882U (en) | 2015-02-27 | 2015-02-27 | A kind of electromechanical actuator of redundance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204538882U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705822A (en) * | 2016-11-29 | 2017-05-24 | 中国神华能源股份有限公司 | Turbine valve stroke measuring device, turbine valve stroke monitoring system and turbine valve stroke monitoring method |
| CN107681818A (en) * | 2017-08-21 | 2018-02-09 | 北京精密机电控制设备研究所 | A kind of double remaining electromechanical actuators of integrated form antiseize suitable for small space |
| CN109341505A (en) * | 2018-09-28 | 2019-02-15 | 北京精密机电控制设备研究所 | A kind of actuator LVDT sensor fixing structure |
| CN109470384A (en) * | 2018-11-08 | 2019-03-15 | 北京精密机电控制设备研究所 | A kind of two-way braking action device power output measurement caliberating device |
| CN117713398A (en) * | 2024-02-05 | 2024-03-15 | 西南交通大学 | High-precision direct-drive electromechanical actuator |
-
2015
- 2015-02-27 CN CN201520118531.0U patent/CN204538882U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705822A (en) * | 2016-11-29 | 2017-05-24 | 中国神华能源股份有限公司 | Turbine valve stroke measuring device, turbine valve stroke monitoring system and turbine valve stroke monitoring method |
| CN107681818A (en) * | 2017-08-21 | 2018-02-09 | 北京精密机电控制设备研究所 | A kind of double remaining electromechanical actuators of integrated form antiseize suitable for small space |
| CN107681818B (en) * | 2017-08-21 | 2019-07-12 | 北京精密机电控制设备研究所 | A kind of integrated form antiseize double redundancy electromechanical actuator suitable for small space |
| CN109341505A (en) * | 2018-09-28 | 2019-02-15 | 北京精密机电控制设备研究所 | A kind of actuator LVDT sensor fixing structure |
| CN109470384A (en) * | 2018-11-08 | 2019-03-15 | 北京精密机电控制设备研究所 | A kind of two-way braking action device power output measurement caliberating device |
| CN109470384B (en) * | 2018-11-08 | 2020-09-18 | 北京精密机电控制设备研究所 | Output force measuring and calibrating device of double-path brake actuator |
| CN117713398A (en) * | 2024-02-05 | 2024-03-15 | 西南交通大学 | High-precision direct-drive electromechanical actuator |
| CN117713398B (en) * | 2024-02-05 | 2024-05-07 | 西南交通大学 | High-precision direct-drive electromechanical actuator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204538882U (en) | A kind of electromechanical actuator of redundance | |
| CN203871981U (en) | Linear displacement type electric steering engine | |
| CN204566126U (en) | A kind of high accuracy truss-like gantry manipulator | |
| CN204538883U (en) | A kind of LVDT formula electromechanical actuator | |
| CN103920837B (en) | A kind of AC servo formula swager with external diameter changing mechanism | |
| CN105990951A (en) | Roller screw electromechanical actuator | |
| CN108032330A (en) | A kind of compact machines people integral joint module and compact machines people | |
| CN105337447A (en) | Pancake electric steering engine | |
| CN109305339B (en) | Three-redundancy full-electric brake actuating system | |
| CN207864554U (en) | A kind of multiple degrees of freedom nut seat mechanism | |
| CN201877980U (en) | Cylindrical redundancy linear-motion electromechanical actuator based on slender installation space | |
| CN106067707B (en) | A kind of linear electromechanical servo mechanism and assembly method | |
| CN103407508A (en) | Twelve-freedom-degree tetrahedron robot | |
| CN103982613A (en) | Linear motion device for charged environment | |
| CN103545977A (en) | Highly integrated electromechanical actuator | |
| CN203734448U (en) | Electromechanical actuator | |
| CN208474454U (en) | Six-axis welding robot and reducer of positioner | |
| CN103615963B (en) | The stator unit construction of linear differential transformer displacement transducer | |
| CN102780311A (en) | Ball screw linear driver for built-in permanent magnet synchronous motor | |
| CN203644244U (en) | Flight simulator control load linear loading device | |
| CN205704149U (en) | A kind of assistant type slide unit single axis robot | |
| CN104723134B (en) | A kind of vertical supporting device using servo electric jar to drive | |
| CN205315632U (en) | Rotary motion changes linear movement device | |
| CN206160980U (en) | Servo mechanism displacement sensor mounting structure | |
| CN107525460A (en) | A kind of redundance LVDT mover assemblies and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |