CN211018536U - Novel integrated linear displacement output electromechanical actuator - Google Patents
Novel integrated linear displacement output electromechanical actuator Download PDFInfo
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- CN211018536U CN211018536U CN201921048194.7U CN201921048194U CN211018536U CN 211018536 U CN211018536 U CN 211018536U CN 201921048194 U CN201921048194 U CN 201921048194U CN 211018536 U CN211018536 U CN 211018536U
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Abstract
The utility model relates to a novel integration linear displacement output electromechanical actuator includes: motor, linear displacement sensor, lead screw subassembly, drive mechanism and spline mechanism, motor, linear displacement sensor, with a lead screw subassembly sharing actuator casing, linear displacement sensor is fixed in on the actuator casing, lead screw subassembly includes the lead screw axle, and lock nut and lead screw are vice, set up the journal stirrup at actuator casing both ends, set up in the journal stirrup department at both ends spline mechanism, structural design is compact, part figure is few, and processing assembly is simple, has reduced the clearance and the bite possibility of whole actuator on the whole greatly, strengthens the bulk rigidity and the reliability of actuator simultaneously, lifting system performance and efficiency.
Description
Technical Field
The utility model relates to a novel integration linear displacement output electromechanical actuator.
Background
The servo mechanism is an actuating mechanism of a space flight vehicle and a weapon system, the electromechanical actuator is a power output actuating system in the electromechanical servo mechanism, and the electromechanical servo mechanism has the characteristics of large load moment, high requirements on dynamic characteristics, high integration degree and the like. In recent years, the power grade of the electromechanical actuator is higher and higher, and along with the progress of professional technologies such as a high-power device, a high-performance motor and a high-performance transmission element, the power quality ratio of the electromechanical actuator is further improved, the electromechanical actuator is more suitable for integrated design to improve the integration level of products, and the electromechanical actuator becomes an important development direction of a high-power servo system in a novel weapon system in the future.
At present, a medium-high power electromechanical actuator is mainly formed by independently designing and manufacturing an actuator shell, a brushless direct current motor and a shell, a transmission mechanism (usually a combination of a multistage straight gear and a ball screw pair), an output mechanism (a rocker arm and an output shaft) and a sensor respectively, and finally assembling the actuator shell, the brushless direct current motor and the shell into one shell to realize the assembly and the fixation of the whole mechanism. The prior art has the defects of complicated structure, more parts, complex assembly, difficulty in ensuring precision, more transmission links, large gaps, low rigidity, low efficiency and high probability of jamming, and each component in the actuator is respectively provided with a shell structure, so that the size and the weight are large, the space utilization rate is low, the power-mass ratio is not high, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a novel integration linear displacement output electromechanical actuator is provided, the technical problem of system performance and inefficiency is solved.
In order to solve the technical problem, the utility model discloses a technical scheme is: a novel integrated linear displacement output electromechanical actuator is characterized by comprising: the linear displacement sensor is fixed on the actuator shell, the lead screw component comprises a lead screw shaft, a locking nut and a lead screw pair, support lugs are arranged at two ends of the actuator shell, the rotation stopping mechanism is arranged at the support lugs at two ends, the actuator shell comprises an upper shell and a lower shell, the lead screw shaft is supported by an upper conical roller bearing and a lower conical roller bearing, the rotation stopping mechanism comprises a stop gasket, a resistor body part of the linear displacement sensor is fixed on the actuator shell, an electric brush and the locking nut move synchronously, the transmission mechanism comprises a transmission key and a matching groove, the stop gasket is controlled by the transmission key, the locking nut and the lead screw shaft are fastened together, and the transmission of the transmission key is controlled by a processing mode, and adjusting the gap between the fitting groove and the fitting groove.
Compared with the prior art, the utility model discloses following profitable technological effect has:
firstly, simple structure includes: motor, linear displacement sensor, lead screw subassembly, drive mechanism and spline mechanism, motor, linear displacement sensor, with a lead screw subassembly sharing actuator casing, linear displacement sensor is fixed in on the actuator casing, lead screw subassembly includes the lead screw axle, and lock nut and lead screw are vice, set up the journal stirrup at actuator casing both ends, set up in the journal stirrup department at both ends spline mechanism, structural design is compact, part figure is few, and processing assembly is simple, has reduced the clearance and the bite possibility of whole actuator on the whole greatly, strengthens the bulk rigidity and the reliability of actuator simultaneously, lifting system performance and efficiency.
Secondly, the application is wide, the number of parts is small due to the adoption of an integrated integral design, the processing and the assembly are simple, the passive quality of the structure is reduced, the heat dissipation area during the work is increased, and the integral quality of the actuator is reduced; compared with the traditional design, the clearance and the probability of jamming of the whole actuator are greatly reduced on the whole, the integral rigidity and the dynamic response capability of the actuator are enhanced, and the heavy-load working reliability of the electromechanical actuator is improved; the technology has good portability and can be widely applied to high-power electromechanical actuators in servo systems of various aircrafts.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the transmission system of the novel integrated linear displacement output electromechanical actuator of the present invention;
fig. 2 is a schematic view of a screw assembly and a rotation stopping mechanism of the novel integrated linear displacement output electromechanical actuator of the invention;
fig. 3 is a schematic structural view of the casing end of the novel integrated linear displacement output electromechanical actuator of the present invention.
Schematic of the reference numerals
11-lower shell 12-upper shell 13-support lug 14-rotation stopping mechanism
21-locking nut 22-straight tooth 25-motor 26-transmission key 27-stop washer
28-screw rod pair 29-linear displacement sensor 31-screw rod shaft 33-pin
34-knuckle bearing
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but these examples are only illustrative and do not limit the scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a novel integrated linear displacement output electromechanical actuator, including: the electric actuator comprises a motor, a linear displacement sensor, a lead screw component, a transmission mechanism and a rotation stopping mechanism, wherein the motor, the linear displacement sensor and the lead screw component share one actuator shell, the linear displacement sensor is fixed on the actuator shell, the lead screw component comprises a lead screw shaft 31, a locking nut 21 and a lead screw pair 28, support lugs 13 are arranged at two ends of the actuator shell, the rotation stopping mechanism 14 is arranged at the support lugs 13 at two ends, the actuator shell comprises an upper shell 12 and a lower shell 11, a support is provided for the lead screw shaft 31 through an upper conical roller bearing and a lower conical roller bearing, the rotation stopping mechanism 14 comprises a stopping gasket 27, a resistor body part of the linear displacement sensor 29 is fixed on the actuator shell, an electric brush and the locking nut 21 synchronously move, the transmission mechanism comprises a transmission key 26 and a matching groove (not shown), the stopping gasket 27 is controlled through the transmission key 26, the locking nut and the screw shaft are fastened together, the transmission of the transmission key is controlled through a processing mode, and the clearance between the locking nut and the matching groove is adjusted. The integrated design is adopted, the number of parts is small, the processing and the assembly are simple, compared with the traditional design, the clearance and the probability of jamming of the whole actuator are greatly reduced on the whole, the integral rigidity and the dynamic response capability of the actuator are enhanced, and the heavy-load working reliability of the electromechanical actuator is improved.
In one embodiment, the transmission mechanism, the lock nut and the rotation stopping mechanism are all arranged inside the actuator shell. The nut is adopted to stop rotating and is arranged inside the shell, the driving key control is used for stopping the gasket, the locking nut and the lead screw shaft are fastened together, the gap between the control key and the matching groove is formed, the key is pressed in the groove by the screw to limit the axial movement of the key, when the lead screw shaft is subjected to a large load, the relative movement cannot exist, and the loosening phenomenon occurring after the large load is avoided.
In one embodiment, the transmission mechanism is a straight tooth and ball screw combination structure.
In one embodiment, the motor is a permanent magnet synchronous motor, and the screw shaft is driven to rotate through the two-stage straight tooth deceleration so as to drive the output shaft fixedly connected with the locking nut to do linear motion.
In one embodiment, a sliding bearing support and a tin bronze support and guide are added between the output end of the actuator shell and the lead screw, so that the stress and friction characteristics during heavy-load work are improved.
In one embodiment, the drive key is pressed into the matching groove by a screw to limit the axial drive of the drive key.
In one embodiment, the rotation stopping mechanism is a circular arc rotation stopping mechanism. The arc is adopted to replace the traditional plane rotation stopping mechanism, so that the aim of stopping rotation without influencing the deflection of the actuator is fulfilled.
In one embodiment, two ends of the actuator shell are connected with the rudder cabin and the positioning hole of the tail nozzle by adopting a pin with axial rotation freedom degree and a joint bearing.
In one embodiment, the output torque of the actuator is not less than 3200N m, the output force is not less than 11000N, the output stroke is not less than +/-45 mm, and the weight is not more than 4.38 Kg. The tendency of self-rotation caused by reversing motion is eliminated.
Under the prerequisite that does not influence this technique overall structure function, the utility model discloses an inside concrete structure of part can adopt prior art's structure.
The utility model discloses a following profitable technological effect:
firstly, simple structure includes: motor, linear displacement sensor, lead screw subassembly, drive mechanism and spline mechanism, motor, linear displacement sensor, with a lead screw subassembly sharing actuator casing, linear displacement sensor is fixed in on the actuator casing, lead screw subassembly includes the lead screw axle, and lock nut and lead screw are vice, set up the journal stirrup at actuator casing both ends, set up in the journal stirrup department at both ends spline mechanism, structural design is compact, part figure is few, and processing assembly is simple, has reduced the clearance and the bite possibility of whole actuator on the whole greatly, strengthens the bulk rigidity and the reliability of actuator simultaneously, lifting system performance and efficiency.
Secondly, the application is wide, the number of parts is small due to the adoption of an integrated integral design, the processing and the assembly are simple, the passive quality of the structure is reduced, the heat dissipation area during the work is increased, and the integral quality of the actuator is reduced; compared with the traditional design, the clearance and the probability of jamming of the whole actuator are greatly reduced on the whole, the integral rigidity and the dynamic response capability of the actuator are enhanced, and the heavy-load working reliability of the electromechanical actuator is improved; the technology has good portability and can be widely applied to high-power electromechanical actuators in servo systems of various aircrafts.
Although the preferred embodiments of the present invention have been disclosed above, the present invention is not limited thereto. It is obvious that not all embodiments need be, nor cannot be exhaustive here. Any person skilled in the art can change and modify the research scheme of the present invention by adopting the design and content of the above disclosed embodiments without departing from the spirit and scope of the present invention, and therefore, any simple modification, parameter change and modification of the above embodiments by the research entity of the present invention all belong to the protection scope of the scheme of the present invention.
Claims (10)
1. A novel integrated linear displacement output electromechanical actuator is characterized by comprising: the linear displacement sensor is fixed on the actuator shell, the lead screw component comprises a lead screw shaft, a locking nut and a lead screw pair, support lugs are arranged at two ends of the actuator shell, the rotation stopping mechanism is arranged at the support lugs at two ends, the actuator shell comprises an upper shell and a lower shell, the lead screw shaft is supported by an upper conical roller bearing and a lower conical roller bearing, the rotation stopping mechanism comprises a stop gasket, a resistor body part of the linear displacement sensor is fixed on the actuator shell, an electric brush and the locking nut move synchronously, the transmission mechanism comprises a transmission key and a matching groove, the stop gasket is controlled by the transmission key, the locking nut and the lead screw shaft are fastened together, and the transmission of the transmission key is controlled by a processing mode, and adjusting the gap between the fitting groove and the fitting groove.
2. The novel integrated linear displacement output electromechanical actuator according to claim 1, wherein the transmission mechanism, the lock nut and the rotation stopping mechanism are all disposed inside the actuator housing.
3. The novel integrated linear displacement output electromechanical actuator of claim 1, wherein the transmission mechanism is a straight-tooth and ball screw combination.
4. The novel integrated linear displacement output electromechanical actuator as claimed in claim 3, wherein the motor is a permanent magnet synchronous motor, and the output shaft fixedly connected with the lock nut is driven to move linearly by driving a screw shaft to rotate through a two-stage straight-tooth deceleration.
5. The novel integrated linear displacement output electromechanical actuator according to claim 1, wherein a sliding bearing support and a tin bronze support and guide are added between the output end of the actuator housing and the lead screw.
6. The actuator according to claim 2, wherein the drive key is pressed into the groove by a screw to limit the axial drive.
7. The novel integrated linear displacement output electromechanical actuator of claim 1, wherein the rotation stop mechanism is a circular arc rotation stop mechanism.
8. The novel integrated linear displacement output electromechanical actuator as claimed in claim 1, wherein the actuator housing is connected with the rudder trunk and the positioning hole of the tail nozzle by pins with axial rotational freedom and joint bearings at two ends.
9. The novel integrated linear displacement output electromechanical actuator according to claim 2, wherein the output torque of the actuator is not less than 3200N-m, the output force is not less than 11000N, the output stroke is not less than ± 45mm, and the weight is not more than 4.38 Kg.
10. The novel integrated linear displacement output electromechanical actuator according to claim 4, wherein the support lug is made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921048194.7U CN211018536U (en) | 2019-07-05 | 2019-07-05 | Novel integrated linear displacement output electromechanical actuator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921048194.7U CN211018536U (en) | 2019-07-05 | 2019-07-05 | Novel integrated linear displacement output electromechanical actuator |
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| CN211018536U true CN211018536U (en) | 2020-07-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336410A (en) * | 2019-07-05 | 2019-10-15 | 贵州航天控制技术有限公司 | A kind of novel all-in-one straight-line displacement output electromechanical actuator |
| CN113357286A (en) * | 2021-06-08 | 2021-09-07 | 北京航空航天大学 | Anti-jamming device of electromechanical actuator and jamming fault determination method |
-
2019
- 2019-07-05 CN CN201921048194.7U patent/CN211018536U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336410A (en) * | 2019-07-05 | 2019-10-15 | 贵州航天控制技术有限公司 | A kind of novel all-in-one straight-line displacement output electromechanical actuator |
| CN113357286A (en) * | 2021-06-08 | 2021-09-07 | 北京航空航天大学 | Anti-jamming device of electromechanical actuator and jamming fault determination method |
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