CN117888792A - Cabin door dual-redundancy electric retractable actuator - Google Patents
Cabin door dual-redundancy electric retractable actuator Download PDFInfo
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- CN117888792A CN117888792A CN202311791130.7A CN202311791130A CN117888792A CN 117888792 A CN117888792 A CN 117888792A CN 202311791130 A CN202311791130 A CN 202311791130A CN 117888792 A CN117888792 A CN 117888792A
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- 230000006698 induction Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 3
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Abstract
The application provides a cabin door dual redundancy electricity receive and releases actuator belongs to mechanical transmission structure technical field, the actuator includes: the first cabin door retraction actuator cylinder, the second cabin door retraction actuator cylinder and a manual emergency control input port used for working under the fault condition, wherein when the cabin door dual redundancy electric retraction actuator cylinder works, one or two of the first cabin door retraction actuator cylinder and the second cabin door retraction actuator cylinder are selected to work. The cabin door dual-redundancy electric retractable actuator is formed by combining two identical actuators back to back, solves the problems of poor reliability and heavy weight of a large-stroke linear sensor in a vibration environment, effectively replaces a hydraulic retractable actuator cylinder, can realize main work and main and standby work, realizes primary fault work, and improves the reliability and safety of products. The single actuator fails, and the other actuator can work in full stroke, so that the speed is halved. In addition, the dual-redundancy actuator can realize the automatic retraction and manual retraction emergency function.
Description
Technical Field
The application belongs to the technical field of mechanical transmission structures, and particularly relates to a cabin door dual-redundancy electric retractable actuator.
Background
The structure of the existing large cabin door retraction actuator cylinder comprises a) a hydraulic retraction actuator cylinder; b) A dual-redundancy motor and two independent linear displacement sensors are adopted, and the sensors are directly connected with an output shaft. The control precision of the dual-redundancy large-stroke output electric actuator is poor, the reliability is poor under a vibration environment, and the weight of the existing large cabin door retraction actuator is large.
Disclosure of Invention
The utility model aims at providing a cabin door dual-redundancy electric retractable actuator to solve the problem of the product force fighting and the accurate control of dual-redundancy large-stroke output electric actuators that exist in the prior art and the problem that the reliability of a large-stroke linear sensor is poor and the weight is large under the vibration environment.
In order to achieve the above purpose, the present application provides the following technical scheme, provides a cabin door dual redundancy electric retractable actuator, the actuator includes: a first hatch retraction actuator, a second hatch retraction actuator, and a manual emergency control input port for operation in the event of a fault,
the first cabin door retraction actuator cylinder and the second cabin door retraction actuator cylinder have the same structure,
when the cabin door dual-redundancy electric retraction actuator works, one or two of the first cabin door retraction actuator and the second cabin door retraction actuator are selected to work.
The application provides a cabin door dual redundancy electricity receive and releases actuator still has such characteristic, first cabin door receive and releases actuator includes: the device comprises a power output transmission assembly, a power source assembly for providing power for the power output transmission assembly, a screw rod screw pair assembly for converting rotary motion output by the power output transmission assembly into linear motion, and a position feedback assembly for monitoring the stroke of the screw rod screw pair assembly.
The cabin door dual-redundancy electric retractable actuator provided by the application also has the characteristics that the power output transmission assembly comprises a primary planetary reducer, a primary straight-tooth reducer and an electromagnetic friction clutch,
the first primary straight-tooth speed reducer comprises a first gear and a second gear, the electromagnetic friction clutch is connected between the first gear and the second gear in series, an output gear of the primary planetary speed reducer is meshed with the first gear, the second gear is connected with the screw rod spiral pair assembly, a planet gear of the primary planetary speed reducer is connected with the power source assembly, and the electromagnetic friction clutch is electrified and attracted.
The cabin door dual-redundancy electric retractable actuator provided by the application also has the characteristic that the disengaging air gap of the electromagnetic friction clutch is 0.2.
The cabin door dual-redundancy electric retractable actuator provided by the application is further characterized in that the power source assembly comprises a direct current brushless motor and an electromagnetic brake, and an output shaft of the direct current brushless motor is connected with the power output transmission assembly.
The cabin door dual-redundancy electric retractable actuator provided by the application is also characterized in that the screw pair assembly comprises a second-stage straight-tooth reducer connected with the power output transmission assembly, a trapezoidal screw rod connected with the second-stage straight-tooth reducer, a screw nut arranged on the trapezoidal screw rod, a circumferentially limited mechanical limiting structure arranged at two ends of the trapezoidal screw rod, a bearing group arranged at two ends of the second-stage straight-tooth reducer and used for supporting the trapezoidal screw rod, an output double-lug hinge shaft used for outputting linear motion, and a sliding support bearing group arranged on the outer diameter of the trapezoidal screw nut, wherein the bearing group comprises a first screw rod support bearing and a second screw rod support bearing, a guide boss is arranged on the screw nut, a Hall induction magnetic sheet is arranged on the guide boss, the screw pair assembly further comprises a first Hall effect sensor and a second Hall effect sensor used for limiting the position of the Hall induction magnetic sheet, the bearing group is a tapered roller bearing,
the trapezoidal thread lead angle of the trapezoidal lead screw and the lead screw nut is smaller than the equivalent friction angle,
the trapezoidal screw rod is a double-line screw rod, and the screw nut is a double-line nut.
The cabin door dual-redundancy electric retractable actuator further has the characteristic that the sensing distance between the first Hall effect sensor and the second Hall effect sensor is 0.3-0.5mm.
The cabin door dual-redundancy electric retractable actuator provided by the application is further characterized in that the position feedback assembly comprises a dual-redundancy RVDT for feeding back position information and a position feedback transmission chain for speed reduction, and the position feedback transmission chain comprises a duplex anti-backlash gear and a harmonic reducer.
The application provides a cabin door dual-redundancy electric retractable actuator, still has such characteristic, manual emergent control input port is including the rotatory spanner that is used for control input, with rotatory spanner complex mechanical port outer hexagonal axle, with outer hexagonal hub connection's manual emergent drive chain 18, the electromagnetic clutch of manual emergent drive chain other end connection lead screw spiral pair subassembly is connected to one end and the deep groove ball bearing group that sets up and be used for supporting electromagnetic clutch at electromagnetic clutch both ends, the deep groove ball bearing group includes first deep groove ball bearing and second deep groove ball bearing, electromagnetic clutch is the outage actuation.
The cabin door dual-redundancy electric retractable actuator provided by the application also has the characteristics that the brushless DC motor is a brushless DC motor with cogging torque, the electromagnetic brake is a power-off electromagnetic brake,
the rotating speed difference of the brushless DC motor of the first cabin door retraction actuator cylinder and the second cabin door retraction actuator cylinder is less than 5%.
Advantageous effects
The cabin door dual-redundancy electric retractable actuator is formed by combining two identical actuators back to back, solves the problems of force fighting and accurate control of dual-redundancy large-stroke output electric actuators, solves the problems of poor reliability and large weight of a large-stroke linear sensor in a vibration environment, effectively replaces a hydraulic retractable actuator cylinder, can realize main work and main standby work, realizes primary fault work, and improves the reliability and safety of products. The single actuator fails, and the other actuator can work in full stroke, so that the speed is halved. In addition, the dual-redundancy actuator can realize the automatic retraction and manual retraction emergency function.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Figure 1 is a schematic structural diagram of a cabin door dual redundancy electric retractable actuator provided in an embodiment of the present application,
the power output transmission assembly comprises a power output transmission assembly and a power output transmission assembly, wherein 1; 2. a DC brushless motor; 3. an electromagnetic brake; 4. a first lead screw support bearing; 5. a first limit structure; 6. a first hall effect sensor; 7. a Hall induction magnetic sheet; 8. a trapezoidal lead screw; 9. a second hall effect sensor; 10. a second limit structure; 11. a binaural hinge axis; 12. a first sliding support bearing; 13. a second sliding support bearing; 14. a lead screw nut; 15. dual redundancy RVDT; 16. a position feedback drive chain; 17. an electromagnetic clutch; 18. a manual emergency transmission chain; 19. a first deep groove ball bearing; 20. a rotating wrench; 21. an outer hexagonal shaft; 22. a second stage spur gear reducer; and 23, a second lead screw supporting bearing, 24 and a second deep groove ball bearing.
Detailed Description
The present application is further described in detail below with reference to the drawings and examples, but it should be understood that these embodiments are not limited to the present application, and functional, method, or structural equivalents and alternatives according to these embodiments are within the scope of protection of the present application by those skilled in the art.
In the description of the embodiments of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description created in this application, unless otherwise indicated, the meaning of "a plurality" is two or more.
The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the creation of this application may be understood by those of ordinary skill in the art by specific circumstances.
As shown in fig. 1, there is provided a cabin door dual redundancy electric retractable actuator, the actuator comprising: the first cabin door retraction actuator cylinder, the second cabin door retraction actuator cylinder and a manual emergency control input port used for working under the fault condition, wherein the first cabin door retraction actuator cylinder and the second cabin door retraction actuator cylinder have the same structure, and when the cabin door dual-redundancy electric retraction actuator cylinder works, one or two of the first cabin door retraction actuator cylinder and the second cabin door retraction actuator cylinder are selected to work.
The cabin door retraction actuator adopts a complete electric mechanical dual-redundancy mechanical structure design, can realize main work and main and standby work, realizes one-time fault work, and improves the reliability and safety of products. The single actuator fails, and the other actuator can work in full stroke, so that the speed is halved. In addition, the dual-redundancy actuator can realize the automatic retraction and manual retraction emergency function.
In some embodiments, the first pod door retraction ram comprises: the device comprises a power output transmission assembly 1, a power source assembly for providing power for the power output transmission assembly 1, a screw pair assembly for converting rotary motion output by the power output transmission assembly 1 into linear motion and a position feedback assembly for monitoring the stroke of the screw pair assembly.
In some embodiments, the power take-off transmission assembly 1 comprises a primary planetary reducer, a primary straight-tooth reducer and an electromagnetic friction clutch,
the first primary straight-tooth speed reducer comprises a first gear and a second gear, the electromagnetic friction clutch is connected between the first gear and the second gear in series, an output gear of the primary planetary speed reducer is meshed with the first gear, the second gear is connected with the screw rod spiral pair assembly, a planet gear of the primary planetary speed reducer is connected with the power source assembly, and the electromagnetic friction clutch is electrified and attracted.
In some embodiments, the disengagement air gap of the electromagnetic friction clutch is 0.2.
In some embodiments, the power source assembly comprises a brushless DC motor 2 and an electromagnetic brake 3, and an output shaft of the brushless DC motor 2 is connected with the power output transmission assembly 1.
In some embodiments, the screw pair assembly comprises a second-stage straight-tooth reducer 22 connected with the power output transmission assembly 1, a trapezoidal screw rod 8 connected with the second-stage straight-tooth reducer 11, screw nuts 14 installed on the trapezoidal screw rod 8, circumferentially limited mechanical limiting structures arranged at two ends of the trapezoidal screw rod 8, bearing groups arranged at two ends of the second-stage straight-tooth reducer and used for supporting the trapezoidal screw rod, output double-lug hinge shafts 11 used for outputting linear motion, and sliding support bearing groups arranged on the outer diameter of the trapezoidal screw rod nut, wherein the limiting structures comprise a first limiting structure 5 and a second limiting structure 10, and the bearing groups comprise a first screw rod support bearing 4 and a second screw rod support bearing 23. The sliding support bearings include a first sliding support bearing 12 and a second sliding support bearing.
The screw nut 14 is provided with a guide boss on which the Hall sensing magnetic sheet 7 is arranged, the screw pair assembly further comprises a first Hall effect sensor 6 and a second Hall effect sensor 9 for limiting the position of the Hall sensing magnetic sheet 7,
the bearing group is a tapered roller bearing,
the trapezoidal thread lead angle of the trapezoidal lead screw rod 8 and the lead screw nut 14 is smaller than the equivalent friction angle,
the trapezoidal screw rod 8 is a double-line screw rod, and the screw nut 14 is a double-line nut.
In some embodiments, the sensing distance of the first hall effect sensor 6 and the second hall effect sensor 10 is 0.3-0.5mm.
In some embodiments, the position feedback assembly includes a dual redundancy RVDT15 for feeding back position information and a position feedback drive chain 16 for decelerating, the position feedback drive chain 16 including a dual anti-backlash gear and a harmonic reducer.
In some embodiments, the manual emergency control input port comprises a rotary wrench 20 for control input, a mechanical port outer hexagonal shaft 21 matched with the rotary wrench, a manual emergency transmission chain 18 connected with the outer hexagonal shaft, an electromagnetic clutch 17 with one end connected with the manual emergency transmission chain and the other end connected with a screw pair assembly, and a deep groove ball bearing group arranged at two ends of the electromagnetic clutch 17 and used for supporting the electromagnetic clutch 17, wherein the electromagnetic clutch 17 is in power-off suction. The deep groove ball bearings include a first deep groove ball bearing 19 and a second deep groove ball bearing 24.
An electromagnetic clutch 17 is arranged in the middle of the transmission chain of the dual-redundancy actuator, and has the functions of friction slip and rear-end transmission chain disengagement, and under the normal power supply condition, the dual-redundancy retraction actuator realizes fault-free automatic retraction; when the cabin door is required to be opened manually in an emergency manner when power is cut off, the electromagnetic clutch at the power output transmission chain end of the motor is disconnected in an outage manner, the transmission chain at the rear end of the electromagnetic clutch is kept to follow, the electromagnetic clutch at the manual emergency output transmission chain end is disconnected and sucked in an outage manner, and the cabin door is opened manually in an emergency manner by rotating the hexagonal shaft outside the mechanical port of the manual emergency end through the rotating wrench with the hexagonal sleeve crank.
In some embodiments, the brushless dc motor 2 is a brushless dc motor with cogging torque, the electromagnetic brake is a power-off electromagnetic brake,
the rotating speed difference of the brushless DC motor 2 of the first cabin door retraction actuator cylinder and the second cabin door retraction actuator cylinder is less than 5%.
The working principle of the cabin door dual redundancy electric retractable actuator provided by the foregoing embodiment is as follows:
the dual-redundancy direct current brushless motor drives a primary speed reducer to operate, and the speed reducer drives a double-head trapezoidal screw rod transmission mechanism to output linear displacement and moment; meanwhile, the double-head trapezoidal screw rod drives the double-redundancy RVDT to rotate through the speed reducing and anti-backlash gears and the harmonic speed reducer, the double-redundancy RVDT converts the linear displacement output position signal of the horizontal tail steering engine into an analog voltage signal and feeds the analog voltage signal back to the steering engine controller, and the analog voltage signal is processed to form a position feedback loop, so that the position closed-loop control of the steering engine system is realized, and the steering engine is completed to drive the steering surface to deflect within a certain angle range.
When a single actuator fails, the other actuator can work in full stroke, and the speed is half of that of the original actuator.
An electromagnetic friction clutch is arranged in the middle of the transmission chain of the dual-redundancy actuator, and has friction slip and rear-end transmission chain disengaging functions, so that the dual-redundancy retractable actuator can realize fault-free automatic retraction under the normal power supply condition; when the cabin door is required to be opened manually in an emergency manner when power is cut off, the electromagnetic friction clutch at the power output transmission chain end of the motor is cut off, the transmission chain at the rear end of the electromagnetic friction clutch is kept to follow, the electromagnetic friction clutch at the manual emergency output transmission chain end is cut off and sucked, and the cabin door is opened manually in an emergency manner by rotating the hexagonal shaft outside the mechanical port of the manual emergency end through the rotating spanner with the inner hexagonal sleeve crank.
In order to ensure that the output electric angle of the RVDT corresponds to the working stroke of the screw pair, the measuring gap error caused by the backlash of the gear pair is reduced, namely, a unique framework of a duplex backlash eliminating gear, a harmonic reducer and a dual-redundancy RVDT is adopted, so that the position transmission precision is ensured
The screw pair adopts a mode of axially positioning the screw and outputting a nut in a sliding way; the transmission supporting structure of the screw pair adopts a double-pushing-double-supporting mode for the first time, namely, the screw is axially fixed through two angular contact (or tapered rollers), and the sliding nut end is supported by two sliding bearings and can axially move. The working stability of the device under large stroke and large load is ensured.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (10)
1. A dual redundancy door electric retractable actuator, the actuator comprising: a first hatch retraction actuator, a second hatch retraction actuator, and a manual emergency control input port for operation in the event of a fault,
the first cabin door retraction actuator cylinder and the second cabin door retraction actuator cylinder have the same structure,
when the cabin door dual-redundancy electric retraction actuator works, one or two of the first cabin door retraction actuator and the second cabin door retraction actuator are selected to work.
2. The door dual redundancy electrical retraction actuator according to claim 1 wherein the first door retraction jack comprises: the device comprises a power output transmission assembly (1), a power source assembly for providing power for the power output transmission assembly (1), a screw pair assembly for converting rotary motion output by the power output transmission assembly (1) into linear motion and a position feedback assembly for monitoring the stroke of the screw pair assembly.
3. The cabin door dual redundancy electric retractable actuator according to claim 2, wherein the power output transmission assembly (1) comprises a primary planetary reducer, a primary spur gear reducer and an electromagnetic friction clutch,
the first primary straight-tooth speed reducer comprises a first gear and a second gear, the electromagnetic friction clutch is connected in series between the first gear and the second gear, the output gear of the primary planetary speed reducer is meshed with the first gear, the second gear is connected with the screw rod spiral pair component, the planetary gear of the primary planetary speed reducer is connected with the power source component,
the electromagnetic friction clutch is electrified and attracted.
4. A cabin door dual redundancy electric retractable actuator according to claim 3, wherein the disengagement air gap of the electromagnetic friction clutch is 0.2.
5. The cabin door dual-redundancy electric retractable actuator according to claim 2, wherein the power source assembly comprises a direct current brushless motor (2) and an electromagnetic brake (3), and an output shaft of the direct current brushless motor (2) is connected with the power output transmission assembly (1).
6. The cabin door dual redundancy electric retractable actuator according to claim 2, wherein the screw pair assembly comprises a second-stage straight-tooth reducer (22) connected with the power output transmission assembly (1), a trapezoidal screw (8) connected with the second-stage straight-tooth reducer (22), a screw nut (14) mounted on the trapezoidal screw (8), a circumferentially limited mechanical limiting structure arranged at two ends of the trapezoidal screw (8), a bearing group arranged at two ends of the second-stage straight-tooth reducer (22) for supporting the trapezoidal screw (8), an output double-ear hinge shaft (11) for outputting linear motion, and a sliding support bearing group arranged on the outer diameter of the screw nut (14),
a guide boss is arranged on the screw nut (14), a Hall induction magnetic sheet (7) is arranged on the guide boss, the screw pair assembly further comprises a first Hall effect sensor (6) and a second Hall effect sensor (9) which are used for limiting the position of the Hall induction magnetic sheet (7),
the bearing group comprises a first screw rod supporting bearing (4) and a second screw rod supporting bearing (23),
the trapezoidal thread rise angle of the trapezoidal screw rod (8) and the screw rod nut (14) is smaller than the equivalent friction angle,
the trapezoid screw rod (8) is a double-wire screw rod, and the screw nut (14) is a double-wire nut.
7. The cabin door dual redundancy electric retractable actuator according to claim 6, wherein the sensing distance of the first hall effect sensor (6) and the second hall effect sensor (9) is 0.3-0.5mm.
8. The cabin door dual redundancy electric retractable actuator according to claim 2, wherein the position feedback assembly comprises a dual redundancy RVDT (15) for feeding back position information and a position feedback drive chain (16) for decelerating, the position feedback drive chain (16) comprising a dual anti-backlash gear and a harmonic reducer.
9. The cabin door dual redundancy electric retractable actuator according to claim 1, wherein the manual emergency control input port comprises a rotary wrench (20) for control input, a mechanical port outer hexagonal shaft (21) matched with the rotary wrench (20), a manual emergency transmission chain (18) connected with the outer hexagonal shaft (21), an electromagnetic clutch (17) with one end connected with the manual emergency transmission chain (18) and the other end connected with a screw pair assembly, and a deep groove ball bearing group arranged at two ends of the electromagnetic clutch (17) for supporting the electromagnetic clutch (17),
the electromagnetic clutch (17) is powered off and attracted.
10. The cabin door dual redundancy electric retractable actuator according to claim 1, wherein the brushless DC motor (2) is a brushless DC motor with cogging torque, the electromagnetic brake (3) is a power-off electromagnetic brake,
the rotating speed difference of the direct current brushless motor (2) of the first cabin door retraction actuator cylinder and the second cabin door retraction actuator cylinder is less than 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311791130.7A CN117888792A (en) | 2023-12-25 | 2023-12-25 | Cabin door dual-redundancy electric retractable actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311791130.7A CN117888792A (en) | 2023-12-25 | 2023-12-25 | Cabin door dual-redundancy electric retractable actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117888792A true CN117888792A (en) | 2024-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311791130.7A Pending CN117888792A (en) | 2023-12-25 | 2023-12-25 | Cabin door dual-redundancy electric retractable actuator |
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| CN (1) | CN117888792A (en) |
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- 2023-12-25 CN CN202311791130.7A patent/CN117888792A/en active Pending
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