CN109818453A - A kind of electromechanical actuator - Google Patents
A kind of electromechanical actuator Download PDFInfo
- Publication number
- CN109818453A CN109818453A CN201711162668.6A CN201711162668A CN109818453A CN 109818453 A CN109818453 A CN 109818453A CN 201711162668 A CN201711162668 A CN 201711162668A CN 109818453 A CN109818453 A CN 109818453A
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- CN
- China
- Prior art keywords
- operating bar
- electromechanical actuator
- nut
- motor
- gear
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- 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.)
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- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention provides a kind of electromechanical actuators, comprising: first motor；Actuation cylinder housing is fixedly connected with the stator of first motor；Lead screw is fixedly connected with the rotor of first motor, and extends to the inside of actuation cylinder housing；Nut is slidably disposed on cylinder enclosure interior, and is cooperated by ball and lead screw；Operating bar is drivingly connected with nut；A kind of electromechanical actuator further includes the anti-jamming mechanism for disengaging operating bar and nut and driving operating bar movement.A kind of electromechanical actuator according to the present invention, by the way that anti-jamming mechanism is arranged, in the case where lead screw and stuck nut, disengage nut and operating bar, and operating bar is driven to move, so that operating bar can continue to push load, so that failure is reduced to the range that can permit, effectively improve a kind of reliability of electromechanical actuator.
Description
Technical field
The present invention relates to actuation mechanism fields, in particular to a kind of electromechanical actuator.
Background technique
Cylinder is by the transmission mechanism of the linear movement for being converted into operating bar of input shaft.If put in load
During dynamic, screw rod and nut clamping stagnation inside cylinder, will lead to operating bar will not stretch again, cannot push load again, have
Catastrophic failure may occur, at this time, it may be necessary to which a kind of mechanism, enables operating bar to continue to press on load, failure is reduced
To in the range of can permit.
Summary of the invention
The present invention is intended to provide a kind of a kind of electromechanical actuator that can be improved reliability.
The present invention provides a kind of electromechanical actuators, comprising: first motor；Actuation cylinder housing, the stator with first motor
It is fixedly connected；Lead screw is fixedly connected with the rotor of first motor, and extends to the inside of actuation cylinder housing；Nut, slideably
It is arranged in cylinder enclosure interior, and is cooperated by ball and lead screw；Operating bar is drivingly connected with nut；A kind of electromechanics actuation
Device further includes the anti-jamming mechanism for disengaging operating bar and nut and operating bar being driven to move.
Further, first clutch, attaching nut and operating bar.
Further, anti-jamming mechanism further include: rack gear is arranged on operating bar and along the axially extending of operating bar；Tooth
Wheel, is engaged with rack；Driving mechanism drives gear.
Further, driving mechanism includes the second motor and the gear with the cooperation of the second motor, gear driving
Gear rotation.
Further, driving mechanism further includes second clutch, and second clutch connects the second motor and gear.
Further, a kind of electromechanical actuator further includes the angle displacement transducer for measuring gear input shaft rotational angle
Device.
Further, angular displacement sensor is rotation differential transformer.
A kind of electromechanical actuator according to the present invention, by the way that anti-jamming mechanism is arranged, in the situation that lead screw and nut are stuck
Under, nut and operating bar are disengaged, and operating bar is driven to move, so that operating bar can continue to push load, reduces failure
To the range that can permit, a kind of reliability of electromechanical actuator is effectively improved.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of electromechanical actuator according to the present invention；
Fig. 2 is A in Fig. 1 to partial schematic diagram.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of electromechanical actuator according to the present invention, comprising: first motor 10；Actuation cylinder housing 20, with
The stator of first motor 10 is fixedly connected；Lead screw 30 is fixedly connected with the rotor of first motor 10, and extends to actuation cylinder housing
20 inside；Nut 40 is slidably disposed on inside actuation cylinder housing 20, and is cooperated by ball and lead screw 30；Operating bar
50, it is drivingly connected with nut 40；A kind of electromechanical actuator further includes that operating bar 50 and nut 40 is made to disengage and drive operating bar 50
The anti-jamming mechanism of movement.The present invention makes nut in the case where lead screw 30 and stuck nut 40 by the way that anti-jamming mechanism is arranged
40 disengage with operating bar 50, and operating bar 50 is driven to move, so that operating bar 50 can continue to push load, are reduced to failure
The range that can permit effectively improves a kind of reliability of electromechanical actuator.
Preferably, referring to figs. 1 and 2, anti-jamming mechanism includes first clutch 61, and first clutch 61 connects spiral shell
Mother 40 and operating bar 50, i.e., in normal operating conditions, first clutch 61 combine nut 40 and operating bar 50, and lead screw 30 is logical
Crossing nut 40 drives operating bar 50 to move.
Specifically, anti-jamming mechanism further includes rack gear 62, and rack gear 62 is arranged on operating bar 50 and along the axis of operating bar 50
To extension, and it is equipped with corresponding gear 63 and driving mechanism, gear 63 is engaged with rack gear 62, so that drive rack 62 is transported
It is dynamic, and then operating bar 50 is driven to move.
More specifically, driving mechanism includes the second motor 64 and the gear 65 with the cooperation of the second motor 64, variable-speed motor
Structure 65 drives gear 63 to rotate, i.e., the present invention drives gear and rack teeth mechanism to drive operating bar movement by the second motor 64.
Preferably, driving mechanism further includes second clutch 66, and second clutch 66 connects the second motor 64 and variable-speed motor
When structure 65, i.e. a kind of electromechanical actuator work normally, second clutch 66 disengages the second motor 64 and gear 65, prevents
Second motor 64 forms retardance to the operating bar of proper motion, reduces the running resistance of operating bar 50.
Preferably, a kind of electromechanical actuator further includes the rotational angle for measuring 65 input shaft of gear or output shaft
Angular displacement sensor 67, i.e. gear 65 transport the rotation that the transform linear motion of operating bar 50 is angular displacement sensor 67
It is dynamic, the measurement of the linear expansion amount of operating bar 50 is realized indirectly.In general, angular displacement sensor 67 is rotation differential transformer,
Measurement accuracy is high, high reliablity.
Illustrate the working principle of the invention in conjunction with Fig. 1 and Fig. 2, when a kind of electromechanical actuator of the invention works normally,
First motor 10 drives lead screw rotation, drives nut 40 to move along a straight line, passes through first clutch between nut 40 and operating bar 50
61 engagement connections, operating bar 50 do stretching motion using zero-bit as midpoint.Second clutch 66 is in disengaged condition, gear
The transform linear motion of operating bar 50 is to rotate, and the rotation differential transformer by being mounted on gear is (referred to as by 65
RVDT angular displacement) is measured, to measure the linear expansion amount of operating bar 50 indirectly.
When lead screw 30 and stuck nut 40, first clutch 61 is disengaged, and second clutch 66 engages, 64 band of the second motor
Dynamic gear 65 moves, and gear 65 drives operating bar 50 to continue to move by rack-and-pinion, so that failure is reduced to
In the range of can permit.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
A kind of electromechanical actuator according to the present invention, by the way that anti-jamming mechanism is arranged, in the situation that lead screw and nut are stuck
Under, nut and operating bar are disengaged, and operating bar is driven to move, so that operating bar can continue to push load, reduces failure
To the range that can permit, a kind of reliability of electromechanical actuator is effectively improved.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of electromechanical actuator, comprising:
First motor (10)；
Actuation cylinder housing (20) is fixedly connected with the stator of the first motor (10)；
Lead screw (30) is fixedly connected with the rotor of the first motor (10), and extends to the interior of the actuation cylinder housing (20)
Portion；
It is internal to be slidably disposed on the actuation cylinder housing (20), and is matched by ball with the lead screw (30) for nut (40)
It closes；
Operating bar (50) is drivingly connected with the nut (40)；
It is characterized in that, a kind of electromechanical actuator further includes that the operating bar (50) is made to disengage and drive with the nut (40)
Move the anti-jamming mechanism of the operating bar (50) movement.
2. a kind of electromechanical actuator according to claim 1, which is characterized in that the anti-jamming mechanism includes:
First clutch (61) connects the nut (40) and the operating bar (50).
3. a kind of electromechanical actuator according to claim 2, which is characterized in that the anti-jamming mechanism further include:
Rack gear (62) is arranged on the operating bar (50) and along the axially extending of the operating bar (50)；
Gear (63) is engaged with the rack gear (62)；
Driving mechanism drives the gear (63).
4. a kind of electromechanical actuator according to claim 3, which is characterized in that
The driving mechanism includes the second motor (64) and the gear (65) with second motor (64) cooperation, the change
Fast mechanism (65) drives gear (63) rotation.
5. a kind of electromechanical actuator according to claim 4, which is characterized in that
The driving mechanism further includes second clutch (66), the second clutch (66) connect second motor (64) and
The gear (65).
6. a kind of electromechanical actuator according to claim 5, which is characterized in that
A kind of electromechanical actuator further includes the angular displacement sensor for measuring the gear (65) input shaft rotational angle
(67)。
7. a kind of electromechanical actuator according to claim 6, which is characterized in that
The angular displacement sensor (67) is rotation differential transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162668.6A CN109818453A (en) | 2017-11-21 | 2017-11-21 | A kind of electromechanical actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162668.6A CN109818453A (en) | 2017-11-21 | 2017-11-21 | A kind of electromechanical actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109818453A true CN109818453A (en) | 2019-05-28 |
Family
ID=66598234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711162668.6A Pending CN109818453A (en) | 2017-11-21 | 2017-11-21 | A kind of electromechanical actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109818453A (en) |
-
2017
- 2017-11-21 CN CN201711162668.6A patent/CN109818453A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190528 |