CN115520372A - Electric servo rotary steering engine integrated with unlocking mechanism - Google Patents

Abstract

The invention relates to an electric servo rotary steering engine integrated with an unlocking mechanism, belongs to the technical field of servo control, and solves the problems that the existing steering engine in the prior art does not have the function of unlocking a rudder wing, so that the whole system space is large and the control is inconvenient. The invention comprises the following steps: the device comprises a driving motor, a machine body, a screw rod assembly, a shifting fork and an output shaft; the driving motor is fixedly arranged above the machine body; the driving motor can drive the shifting fork to deflect through the screw rod assembly; the output shaft is rotatably arranged on the machine body, and the shifting fork is fixedly connected with the output shaft; when the shifting fork deflects, the output shaft can drive the two rudder wings to deflect. The screw rod assembly is matched with the lower machine cover assembly to lock the rudder wing, and the rudder wing can be driven to deflect through the driving motor after being unlocked. The invention realizes the unlocking and the rotary driving of the rudder wing.

Description

Electric servo rotary steering engine integrated with unlocking mechanism

Technical Field

The invention relates to the technical field of servo control, in particular to an electric servo rotary steering engine integrated with an unlocking mechanism.

Background

In the development of aircraft, there has been a technical trend in recent years to use electromechanical servos instead of pneumatic servos. Compared with a pneumatic servo system, the motor servo system has the main advantages of small size, excellent dynamic performance, no need of a gas circuit circulating system and the like.

The existing rudder-swinging type steering engine is generally arranged with a 90-degree angle between a motor and a rotation center of a rudder wing because the existing rudder-swinging type steering engine is suitable for the space layout in an aircraft.

When the existing steering engine is arranged, a bevel gear transmission mode is generally adopted, and a screw rod shifting fork mode is also adopted for products, but the unlocking of the rudder wings and the driving of the rudder wings need to be respectively provided with a driving mechanism, so that the whole space arrangement is not compact enough, and the occupied space is large.

Disclosure of Invention

In view of the above analysis, the invention aims to provide an electric servo rotary steering engine integrated with an unlocking mechanism, so as to solve the problems that the existing steering engine does not have the function of unlocking a rudder wing, so that the whole system space is large, and the control is inconvenient.

The invention is mainly realized by the following technical scheme:

the utility model provides an integrated release mechanism's electronic servo rotary actuator which characterized in that includes: the device comprises a driving motor, a machine body, a screw rod assembly, a shifting fork and an output shaft;

the driving motor is fixedly arranged above the machine body; the driving motor can drive the shifting fork to deflect through the screw rod assembly;

the output shaft is rotatably arranged on the machine body, and the shifting fork is fixedly connected with the output shaft; when the shifting fork deflects, the output shaft rotates relative to the machine body;

and two ends of the output shaft are respectively connected with the two rudder wings.

Further, the lead screw subassembly includes: the first lead screw nut mechanism and the second lead screw nut mechanism;

the first lead screw-nut mechanism includes: a ball screw and ball screw nut;

the second lead screw-nut mechanism includes: a trapezoidal lead screw and a trapezoidal lead screw nut;

the trapezoidal screw rod is sleeved inside the ball screw rod and can slide relatively; the first screw rod nut mechanism is used for driving the shifting fork to rotate; the second feed screw nut mechanism is used for locking/unlocking the lower cover assembly.

Further, the ball screw nut is screwed outside the ball screw to form a first screw nut pair; when the ball screw rotates, the ball screw nut can displace along the axial direction of the ball screw; when the ball screw nut displaces relative to the ball screw, the shifting fork can be shifted to rotate.

Furthermore, the trapezoidal screw rod nut is screwed outside the trapezoidal screw rod through threads to form a second screw rod nut pair; when the driving motor drives the trapezoidal screw rod nut to rotate, the trapezoidal screw rod can displace along the axis direction of the trapezoidal screw rod nut; when the trapezoid lead screw is displaced, the lower cover assembly can be unlocked; the lower cover assembly is used for locking the rudder wing. When the lower machine cover assembly is locked, the rudder wing is locked; and after the lower machine cover assembly is unlocked, the rudder wing is unlocked.

Further, the lead screw subassembly still includes: the transmission gear is rotatably arranged on the machine body; a motor gear is fixedly arranged on an output shaft of the driving motor; the transmission gear is in meshed transmission with the motor gear and is fixedly connected with the trapezoidal screw rod nut.

Further, the lower cover assembly includes: the rudder locking device comprises a lower machine cover, a rudder locking rod, a first spring, a second spring and a rudder locking pin;

the rudder lock rod and the rudder lock pin are both arranged in the lower machine cover in a sliding manner, and the rudder lock pin is vertically clamped in a lock hole of the rudder lock rod; a first spring is arranged between the rudder locking stock and the lower machine cover, and when the rudder locking pin is clamped with the lock hole, the first spring is in a compressed state;

a second spring is sleeved outside the rudder locking pin; a rudder locking hole is formed in the rudder locking pin, and the tail end of the trapezoidal screw rod can be clamped into the rudder locking hole; when the trapezoidal screw rod is clamped into the rudder locking hole, the second spring is in a compressed state;

a rudder locking plate is fixedly arranged at the tail end of the rudder locking rod; when the rudder locking plate is clamped with the rudder wing, the rudder wing is in a locking state.

Further, after the lower cover assembly is unlocked, the driving motor can drive the ball screw to rotate, and then the ball screw nut is driven to move up and down; when the ball screw nut moves up and down, the shifting fork can be driven to deflect.

Further, when the trapezoidal screw rod is moved out of the rudder locking hole, the rudder locking pin is moved out of the rudder locking hole of the rudder locking rod under the elastic force of the second spring;

when the rudder locking pin is moved out of the lock hole, the rudder locking rod is displaced under the elastic force of the first spring.

Further, the end of lock rudder plate sets up two lock rudder bosss, and the end of two rudder wings all sets up the locking groove, lock rudder boss and locking groove block realize the locking to the rudder wing.

Furthermore, the displacement of the rudder locking rod can drive the rudder locking boss to be separated from the locking groove, so that the rudder wing can be unlocked.

Further, the mode that the ball screw nut drives the shifting fork to deflect is:

specifically, one side of the shifting fork is provided with a sliding chute; a shifting fork slide block is fixedly arranged on two sides of the ball screw nut; the shifting fork slide block is arranged inside the sliding groove of the shifting fork; when the shifting fork slide block moves up and down along the axis direction of the ball screw, the shifting fork slide block slides in the sliding groove, and then the shifting fork is driven to deflect.

The lead screw subassembly still includes: a push pin and a third spring; the push pin is slidably arranged in the first clamping groove of the ball screw through a third spring; a second clamping groove is formed in the side face of the trapezoidal screw rod; when the first clamping groove is aligned with the second clamping groove, the pushing pin can be clamped into the second clamping groove, and the ball screw and the trapezoidal screw are combined into a whole.

The output shaft is rotatably arranged on the machine body through a first bearing; two rudder wing mounting seats are respectively mounted at two ends of the output shaft, and the two rudder wings are rotatably mounted on the two rudder wing mounting seats; a torsion spring is arranged between the rudder wing and the rudder wing mounting seat; after the rudder wing is unlocked, the output shaft can drive the rudder wing to rotate synchronously.

It is worth noting that: the rudder wing and the mounting assembly thereof do not belong to a part of the electric servo rotary steering engine of the invention, and are only used for assisting in describing the working principle of the electric servo rotary steering engine of the invention, and are not used as limitations on the electric servo rotary steering engine of the invention.

The technical scheme of the invention can at least realize one of the following effects:

1. the electric servo rotary steering engine of the integrated unlocking mechanism is provided with a trapezoidal screw and a ball screw, and a two-stage transmission process is realized by nesting double screws. The lower cover assembly and the rudder wing are unlocked through the displacement of the trapezoidal screw rod, the ball screw rod drives the ball screw nut to displace, and the ball screw nut displaces to drive the shifting fork to deflect so as to drive the output shaft and the rudder wing to deflect.

2. According to the electric servo rotary steering engine with the integrated unlocking mechanism, disclosed by the invention, the rudder wing is locked through the lower cover assembly, the rudder wing is locked innovatively by adopting a structure of a multi-stage spring pin consisting of the first spring, the second spring, the rudder locking rod and the rudder locking pin, the trapezoidal screw rod is driven to displace through the driving motor of the steering engine, the unlocking of the rudder locking pin and the rudder locking rod is realized, the rudder locking rod is driven to displace through the spring, the unlocking of the rudder wing is further realized, and an independent power source is not required.

3. The electric servo rotary steering engine integrated with the unlocking mechanism disclosed by the invention adopts a tail end feedback mode to form a closed-loop system, so that the servo precision of the system is improved.

4. The electric servo rotary steering engine with the integrated unlocking mechanism has the functions of unlocking the folding rudder wings and high-dynamic high-precision servo driving the rudder wings to rotate, can unlock the rudder wings after receiving instruction signals of an upper computer, and can quickly and accurately control the deflection of the rudder wings within a set time.

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.

FIG. 1 is a schematic structural diagram of an electric servo rotary steering engine of an integrated unlocking mechanism of the invention;

FIG. 2 isbase:Sub>A cross-sectional view of the electric servo rotary steering engine of the integrated unlocking mechanism of FIG. 1 in the direction A-A;

FIG. 3 is a cross-sectional view of the electric servo rotary actuator of the integrated unlocking mechanism of FIG. 1 in the direction B-B;

FIG. 4 is a schematic structural diagram of a screw rod assembly of the electric servo rotary steering engine of the integrated unlocking mechanism;

FIG. 5 is a cross-sectional view in the direction C-C of the lead screw assembly of FIG. 4;

FIG. 6 is a schematic structural diagram of an unlocking mechanism of an electric servo rotary steering engine integrated with the unlocking mechanism;

FIG. 7 is a partial cross-sectional view of a lower cover assembly of the electric servo rotary steering engine of the integrated unlocking mechanism of the present invention;

FIG. 8 is a connection state diagram of an electric servo rotary steering engine and a rudder wing of the integrated unlocking mechanism;

FIG. 9 is a side view of the rudder wing;

fig. 10 is a front view of the rudder wing.

Reference numerals:

1. a drive motor; 2. a body; 3. a tail end feedback transfer gear; 4. a controller assembly; 5. a lower cover assembly; 6. a screw assembly; 7. a disc spring; 8. a potentiometer; 9. a first bearing cover plate; 10. a shifting fork; 11. an output shaft; 12. a second bearing cover plate; 13. an output shaft feedback gear; 14. a motor gear; 15. a feedback spindle; 16. a first bearing; 17. a second bearing; 18. a rudder wing; 19. a rudder wing mounting base; 20. a torsion spring;

5-1, putting a machine cover; 5-2, locking a rudder stock; 5-3, locking a rudder cover plate; 5-4. Rudder locking plate; 5-5, a first spring; 5-6. A second spring; 5-7, locking a rudder pintle; 5-8, adjusting the cushion block; 5-9. Locking rudder hole;

6-1. A transmission gear; 6-2, trapezoidal screw rod nut; 6-3, a threaded sleeve; 6-4. A third spring; 6-5, a promotion; 6-6. Ball screw; 6-7, ball screw nut; 6-8, trapezoidal screw rod; 6-9, shifting fork slide block; 6-10. A third bearing; 6-11. A fourth bearing; 6-12. A fifth bearing; and 6-13, a sixth bearing.

18-1. Locking groove.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.

A specific embodiment of the present invention, as shown in fig. 1 to 10, discloses an electric servo rotary steering engine integrated with an unlocking mechanism, which is characterized by comprising: the device comprises a driving motor 1, a machine body 2, a lower machine cover assembly 5, a screw rod assembly 6, a shifting fork 10 and an output shaft 11.

As shown in fig. 1, the driving motor 1 is fixedly installed above the machine body 2.

As shown in fig. 2, the driving motor 1 can drive the shift fork 10 to deflect through the lead screw assembly 6. As shown in fig. 3, an output shaft 11 is rotatably mounted on the machine body 2, and the shifting fork 10 is fixedly connected with the output shaft 11; when the fork 10 is deflected, the output shaft 11 rotates relative to the body 2.

The driving motor 1 drives the screw rod assembly 6 to displace, so that the shifting fork 10 deflects, and the shifting fork 10 drives the output shaft 11 to rotate, thereby realizing the angular displacement output of the steering engine.

In particular, the output shaft 11 is rotatably mounted on the body 2 by means of two first bearings 16, as shown in fig. 3. Further, outside the two first axes 16, a first bearing cover plate 9 and a second bearing cover plate 12 are mounted; and the first bearing cover plate 9 and the second bearing cover plate 12 are both fixedly connected with the machine body 2.

As shown in fig. 8, two rudder wings 18 are connected to both ends of the output shaft 11. When the output shaft 11 is driven by the driving motor 1 to rotate, the rudder wing 18 can be driven to deflect.

In the invention, the lower cover assembly 5 is used as a locking mechanism for locking the rudder wing 18; the screw assembly 6 serves as an unlocking mechanism for locking/unlocking the lower lid assembly 5. After the lower machine cover assembly 5 is unlocked, the rudder wing 18 is automatically unlocked, and at the moment, the screw rod assembly 6 serves as a transmission mechanism and can drive the rudder wing 18 to rotate; when the rudder wing 18 rotates, the deflection angle of the rudder wing 18 is monitored through the output feedback assembly, and feedback control is realized.

The electric servo rotary steering engine of the integrated unlocking mechanism is described in three parts as follows:

a first part: screw rod assembly 6

In an embodiment of the present invention, as shown in fig. 2, 4 and 5, the screw assembly 6 includes: the first lead screw nut mechanism and the second lead screw nut mechanism;

the first lead screw-nut mechanism includes: ball screw 6-6 and ball screw nut 6-7;

the second lead screw-nut mechanism includes: a trapezoidal screw rod 6-8 and a trapezoidal screw rod nut 6-2;

the trapezoidal screw 6-8 is sleeved inside the ball screw 6-6 and can slide relatively; the first screw rod nut mechanism is used for driving the shifting fork 10 to rotate; the second feed screw-nut mechanism is used for locking/unlocking the lower cover assembly 5.

Specifically, the lower end cylindrical section of the trapezoidal screw 6-8 can be clamped into a rudder locking hole 5-9 of the lower cover assembly 5 to lock the lower cover assembly 5; when the lower end cylindrical section of the trapezoidal screw 6-8 is moved out of the rudder locking hole 5-9, the lower cover assembly 5 is unlocked.

Specifically, the ball screw nut 6-7 is screwed outside the ball screw 6-6 to form a first screw nut pair; when the ball screw 6-6 rotates, the ball screw nut 6-7 can displace along the axial direction of the ball screw 6-6. When the ball screw nut 6-7 moves relative to the ball screw 6-6, the shifting fork 10 can be shifted to rotate.

Further, the mode that the ball screw nut drives the shifting fork to deflect is:

specifically, as shown in fig. 4, shifting fork sliding blocks 6-9 are fixedly arranged on two sides of the ball screw nut 6-7. Further, the shifting fork 10 is of a U-shaped structure, and a sliding groove is formed in one side of the shifting fork 10; the shifting fork slide blocks 6-9 are arranged inside the sliding grooves of the shifting fork 10; when the shifting fork slide blocks 6-9 move up and down along the axis direction of the ball screw 6-6, the shifting fork slide blocks can simultaneously slide in the sliding grooves of the shifting fork 10, and then the shifting fork 10 is driven to deflect. Preferably, the sliding groove is a U-shaped groove, and the shifting fork sliding block 6-9 is of a cylindrical structure; and the diameter of the shifting fork slide block 6-9 is equal to the width of the U-shaped groove. When the ball screw nut 6-7 drives the shifting fork 10 to deflect through the shifting fork slide block 6-9, the shifting fork slide block 6-9 slides in the sliding groove and relatively rotates.

As shown in FIG. 4, the trapezoidal lead screw nut 6-2 is screwed on the outside of the trapezoidal lead screw 6-8 through threads to form a second lead screw nut pair.

Specifically, as shown in fig. 5, the screw assembly 6 further includes: the transmission gear 6-1 is rotatably arranged on the machine body 2; a motor gear 14 is fixedly arranged on an output shaft of the driving motor 1; the transmission gear 6-1 is in meshed transmission with a motor gear 14. And the transmission gear 6-1 is fixedly connected with the trapezoidal screw rod nut 6-2.

Specifically, the trapezoidal lead screw nut 6-2 is disposed above the ball screw 6-6 and rotates in synchronization with the transmission gear 6-1.

In one embodiment of the present invention, as shown in fig. 5, the trapezoidal screw 6-8 is sleeved inside the ball screw 6-6; the trapezoidal screw 6-8 and the ball screw 6-6 can only relatively slide but can not relatively rotate through shape limitation, and specifically, the trapezoidal screw 6-8 comprises a threaded rod part and a columnar part; the threaded rod part is sleeved inside the trapezoidal screw nut 6-2 through threads, and the columnar part is sleeved inside the ball screw 6-6 in a sliding mode. Specifically, the cross section of the columnar part is elliptical or rectangular; the trapezoidal screw 6-8 and the ball screw 6-6 can only slide relatively and can not rotate relatively.

In the initial state, the lower lid assembly 5 is in the locked state.

Before lower cover subassembly 5 unblock: when the driving motor 1 drives the transmission gear 6-1 to rotate through the motor gear 14, the trapezoid lead screw nut 6-2 rotates, the trapezoid lead screw 6-8 slides relative to the ball screw 6-6, and the ball screw 6-6 and the ball screw nut 6-7 are kept still. That is, when the trapezoidal lead screw nut 6-2 rotates, the trapezoidal lead screw 6-8 can displace along the direction of the axis of the trapezoidal lead screw; and when the trapezoid screw rods 6-8 are displaced, the lower cover assembly 5 can be unlocked.

After the lower cover assembly 5 is unlocked: when the driving motor 1 drives the transmission gear 6-1 to rotate, the trapezoidal screw nut 6-2, the trapezoidal screw 6-8 and the ball screw 6-6 rotate synchronously as a whole, and the ball screw nut 6-7 moves up and down.

In order to ensure the consistency of the movement of the ball screw 6-6 and the trapezoidal screw 6-8 after the lower cover assembly 5 is unlocked, the screw assembly 6 of the invention also comprises: a push pin 6-5 and a third spring 6-4.

Specifically, the push pin 6-5 of the ball screw is slidably mounted in a first clamping groove of the ball screw 6-6 through a third spring 6-4; a second clamping groove is formed in the side face of the trapezoidal screw rod 6-8; when the first clamping groove is aligned with the second clamping groove, the push pin 6-5 can be clamped into the second clamping groove, and the ball screw 6-6 and the trapezoidal screw 6-8 are combined into a whole. At the moment, the ball screw 6-6 and the trapezoidal screw 6-8 move synchronously, and when the driving motor 1 drives the trapezoidal screw nut 6-2 to rotate, the trapezoidal screw nut 6-2, the trapezoidal screw 6-8 and the ball screw 6-6 are taken as a whole, and the three components rotate synchronously.

Specifically, a push pin 6-5 and a third spring 6-4 are arranged in a first clamping groove on the side surface of the ball screw 6-6; the side surface of the ball screw 6-6 is provided with a convex mounting part, the outside of the mounting part is sleeved with a mounting threaded sleeve 6-3, and a push pin 6-5 and a third spring 6-4 are limited in the first clamping groove through the threaded sleeve 6-3.

Specifically, when the trapezoidal screw rod 6-8 is clamped in the rudder locking hole 5-9, the third spring 6-4 is in a compressed state, and the push pin 6-5 is tightly pressed against the side face of the trapezoidal screw rod 6-8 under the elastic force of the third spring 6-4.

Specifically, when the trapezoidal screw rods 6-8 are arranged to slide upwards to be separated from the rudder locking holes 5-9, the first clamping grooves are aligned with the second clamping grooves. And the trapezoidal screw rod 6-8 moves upwards to the maximum stroke, namely when the trapezoidal screw rod 6-8 slides upwards to be separated from the rudder locking hole 5-9, the trapezoidal screw rod 6-8 is contacted with the lower end face of the transmission gear 6-1.

Further, as shown in fig. 2 and 5, the screw assembly 6 further includes: a third bearing 6-10, a fourth bearing 6-11, a fifth bearing 6-12 and a sixth bearing 6-13. Specifically, the transmission gear 6-1 is rotatably mounted on the body 2 through a third bearing 6-10. The trapezoid feed screw nut 6-2 is rotatably arranged on the machine body 2 through a fourth bearing 6-11 and is fixedly connected with the transmission gear 6-1. The upper end of the ball screw 6-6 is rotationally connected with the machine body 2 through a fifth bearing 6-12, and the lower end is rotationally connected with the machine body 2 through a sixth bearing 6-13.

Further, a disc spring 7 is arranged between the upper side surface of the transmission gear 6-1 and the machine body 2. The disc spring 7 is used for pressing the transmission gear 6-1, so that the transmission gear 6-1 is convenient to mount and the axial displacement of the transmission gear 6-1 is limited.

A second part: lower cover assembly 5

In an embodiment of the present invention, as shown in fig. 6 and 7, the lower cover assembly 5 includes: the lower cover 5-1, the rudder locking rod 5-2, the first spring 5-5, the second spring 5-6 and the rudder locking pin 5-7.

Specifically, the rudder lock 5-2 and the rudder lock 5-7 are both slidably mounted inside the lower machine cover 5-1, and the rudder lock 5-7 is vertically clamped in a lock hole of the rudder lock 5-2; a first spring 5-5 is arranged between the rudder locking stock 5-2 and the lower machine cover 5-1, and when the rudder locking pin 5-7 is clamped with the lock hole, the first spring 5-5 is in a compressed state;

specifically, as shown in fig. 6 and 7, a second spring 5-6 is sleeved outside the rudder pintle 5-7; the rudder locking pin 5-7 is provided with a rudder locking hole 5-9, and the tail end of the trapezoidal screw rod 6-8 can be clamped into the rudder locking hole 5-9; when the trapezoidal screw rod 6-8 is clamped into the rudder locking hole 5-9, the second spring 5-6 is in a compressed state.

As shown in fig. 6 and 7, the lower cover assembly further includes, by the lower cover 5-1: a rudder locking cover plate 5-3 and an adjusting cushion block 5-8. Specifically, the rudder locking rod 5-2 is arranged in a first rod groove on the lower cover plate 5-1, a spring mounting hole is formed in the end of the rudder locking rod 5-2, and the first spring 5-5 is mounted in the spring mounting hole. In order to prevent the rudder locking stock 5-2 from being separated from the lower cover plate 5-1, a rudder locking cover plate 5-3 is fixedly arranged below the lower cover plate 5-1; the rudder locking cover plate 5-3 is provided with a through hole, and the lower end of the rudder locking rod 5-2 passes through the through hole and can slide relatively. The upper end of the rudder locking stock 5-2 is provided with a limiting part which can not pass through the through hole on the rudder locking cover plate 5-3, and the rudder locking stock 5-2 is arranged in the first stock groove on the lower cover plate 5-1 in a sliding way, as shown in figure 6.

Specifically, the rudder locking pin 5-7 is arranged in a second rod groove on the lower cover plate 5-1, and a second spring 5-6 is sleeved outside the rudder locking pin 5-7 and tightly propped between the end of the rudder locking pin 5-7 and the lower cover plate 5-1; and an adjusting cushion block 5-8 is fixedly arranged at a port of the second rod groove, and the adjusting cushion block 5-8 is used for limiting the displacement of the rudder pintle 5-7. When the trapezoidal screw 6-8 is moved out of the rudder locking hole 5-9, the elastic force of the second spring 5-6 pushes the rudder locking pin 5-7 to displace until the rudder locking pin 5-7 is contacted with the adjusting cushion block 5-8, and the rudder locking pin 5-7 stops displacing.

The electric servo rotary steering engine of the integrated unlocking mechanism locks the rudder wing 18 through the lower cover component 5. Further, the lock rudder plate 5-4 is fixedly arranged at the tail end of the lock rudder stock 5-2; when the rudder lock 5-4 is engaged with the rudder wing 18, the rudder wing 18 is in a locked state.

Specifically, the tail end of the rudder locking plate 5-4 is provided with two rudder locking bosses, the tail ends of the two rudder wings 18 are both provided with locking grooves 18-1, and the rudder locking bosses are engaged with the locking grooves 18-1 to lock the rudder wings 18, as shown in fig. 8.

In the invention, when the trapezoidal screw rods 6-8 are clamped with the rudder locking holes 5-9, the lower cover assembly 5 is in a locking state, and the rudder wings 18 are also in a locking state. When the trapezoidal screw rods 6-8 are moved out of the rudder locking holes 5-9, the lower cover assembly 5 is in an unlocking state, and the lower cover assembly 5 unlocks the rudder wings 18.

In the locked state of the lower lid assembly 5:

the tail end cylinder of the trapezoidal screw 6-8 is clamped into the rudder locking hole 5-9, and the displacement of the rudder locking pin 5-7 is limited through the trapezoidal screw 6-8; the second spring 5-6 is arranged between the rudder pintle 5-7 and the body 2 and is in a compressed state. The tail end of the rudder lock pintle 5-7 is clamped into a lock hole of the rudder lock lever 5-2; the rudder locker 5-7 restricts the displacement of the rudder locker 5-2 and the first spring 5-5 is in a compressed state.

And the tail end of the rudder locking rod 5-2 is provided with a rudder locking plate 5-4, and a rudder locking boss of the rudder locking plate 5-4 is clamped in a locking groove 18-1 of the rudder wing 18, so that the rudder wing 18 cannot rotate, and the rudder wing 18 is locked.

When the lower cover assembly 5 is in an unlocked state:

the trapezoidal screw rod 6-8 is moved out of the lock rudder hole 5-9, and the lock rudder pin 5-7 is moved out of the lock rudder lever 5-2 under the elastic force action of the second spring 5-6; after the rudder lock pin 5-7 is removed from the lock hole, the rudder lock rod 5-2 can be displaced under the elastic force of the first spring 5-5.

Further, after the lower cover assembly 5 is unlocked, the rudder wing 18 is unlocked; the unlocking process of the rudder wing 18 is as follows: the rudder locking lug boss on the rudder locking plate 5-4 can be driven to be separated from the locking groove 18-1 by downward displacement of the rudder locking rod 5-2, and the rudder locking lug boss is moved out of the locking groove 18-1, so that the rudder wing 18 can be unlocked.

It is worth noting that: since the rudder wings 18 are connected with the output shaft 11, the rotation of the output shaft 11 and the rudder wings 18 is synchronous; when the rudder blade 18 is locked so as not to rotate, the output shaft 11 also cannot rotate. Since the output shaft 11 and the fork 10 are fixedly connected, the fork 10 cannot rotate. Because the shifting fork slide blocks 6-9 on both sides of the ball screw nut 6-7 are arranged in the slide grooves of the shifting fork 10, when the shifting fork 10 cannot rotate, the up-and-down displacement of the ball screw nut 6-7 is limited at the same time. Because the ball screw 6-6 and the ball screw nut 6-7 move synchronously, the ball screw 6-6 can not rotate when the ball screw nut 6-7 can not move. That is, before the rudder wing 18 is unlocked, the rudder wing 18 can be used for reversely limiting the output shaft 11 and the ball screw 6-6, so that the ball screw 6-6 cannot rotate.

Further, the ball screw 6-6 and the trapezoidal screw 6-8 cannot rotate relatively due to shape limitation, so that when the ball screw 6-6 cannot rotate, the trapezoidal screw 6-8 is limited to rotate, and at the moment, the trapezoidal screw nut 6-2 rotates to drive the trapezoidal screw 6-8 to slide in the screw chute inside the ball screw 6-6.

According to the electric servo rotary steering engine integrated with the unlocking mechanism, when the trapezoidal screw rods 6-8 linearly displace upwards, the trapezoidal screw rods can move out of the steering lock holes 5-9; and then the lower cover plate assembly 5 is unlocked, and after the lower cover plate assembly 5 is unlocked, the rudder wing 18 is unlocked through the reset function of the spring. After the rudder wing 18 is unlocked, the rudder wing 18 releases the reverse limit of the output shaft 11 and the ball screw 6-6, and then the output shaft 11 and the ball screw 6-6 can rotate.

Further, the process of the driving motor 1 driving the rudder wing 18 to deflect is as follows:

after the lower cover assembly 5 is unlocked, the driving motor 1 drives the ball screw 6-6 to rotate, and the ball screw 6-6 drives the ball screw nut 6-7 to move up and down; when the ball screw nut 6-7 moves up and down, the shifting fork slide block 6-9 slides in the U-shaped groove of the shifting fork 10 to drive the shifting fork 10 to deflect, and then the shifting fork 10 drives the output shaft 11 and the rudder wing 18 to rotate.

Specifically, after the rudder wing 18 is unlocked, when the driving motor 1 drives the trapezoidal lead screw nut 6-2 to rotate, the friction force (sliding friction) between the trapezoidal lead screw 6-8 and the trapezoidal lead screw nut 6-2 is greater than the friction force (rolling friction) between the ball screw 6-6 and the ball lead screw nut 6-7, so that the trapezoidal lead screw 6-8 and the trapezoidal lead screw nut 6-2 do not rotate relatively at the moment. And the trapezoidal screw 6-8 and the ball screw 6-6 are fixed into a whole through the push pin 6-5, the trapezoidal screw 6-8 synchronously rotates the trapezoidal screw nut 6-2 and simultaneously drives the ball screw 6-6 to rotate, when the ball screw 6-6 rotates, the ball screw nut 6-7 moves up and down along the axis of the ball screw 6-6, and further drives the shifting fork slide block 6-9 to displace, and drives the shifting fork 10 to deflect through the shifting fork slide block 6-9, so that the rotary driving of the output shaft 11 and the rudder wing 18 is realized.

Specifically, the mounting manner of the rudder wing 18 is as follows:

as shown in fig. 8, two rudder wing mounting seats 19 are respectively mounted on both ends of the output shaft 11, and two rudder wings 18 are rotatably mounted on the two rudder wing mounting seats 19. As shown in fig. 9 and 10, a torsion spring 20 is disposed between the rudder wing 18 and the rudder wing mounting base 19; after the rudder wing 18 is unlocked, the output shaft 11 can drive the rudder wing 18 to rotate synchronously.

After the rudder wing 18 is unlocked, the rudder wing 18 rotates with respect to the rudder wing mounting base 19, and the rudder wing 18 is automatically unfolded by the elastic force of the torsion spring 20. After the rudder wings 18 are unfolded, the rudder wings can rotate under the driving of the output shaft 11.

A new power unit (such as an electromagnetic pin puller) is needed when the existing steering engine unlocks a rudder wing, the electric servo rotary steering engine integrating the unlocking mechanism realizes unlocking of a lower machine cover assembly 5 through a trapezoidal screw 6-8 of a screw assembly 6 so as to further realize unlocking of the rudder wing 18, and realizes rotary driving of the rudder wing 18 through a ball screw 6-6; the present invention integrates the unlocking and driving of the rudder wing 18 into one body, and can be realized by only one driving motor 1.

Example 2

Under the finite space, the current steering engine can not accurately feed back the response state, and the control accuracy is influenced.

In a specific embodiment of the present invention, based on embodiment 1, the electric servo rotary actuator of the present invention further includes: a controller assembly 4 and an output feedback assembly.

After receiving the upper computer instruction signal, the controller assembly 4 controls the driving motor 1 to unlock the lower cover assembly 5 and the rudder wing 18. After the rudder wing 18 is unlocked, the controller component 4 controls the driving motor 1 to drive the rudder wing 18 to rotate according to the instruction of the upper computer, and controls the deflection angle of the rudder wing 18.

The output feedback assembly includes: an output shaft feedback gear 13, a tail end feedback switching gear 3 and a potentiometer 8.

An output shaft feedback gear 13 is fixedly arranged on the other side of the shifting fork 10; and the axis of rotation of the output shaft feedback gear 13 coincides with the axis of the output shaft 11. Since the fork 10 is fixedly connected to the output shaft 11 and the output shaft feedback gear 13 is fixed to the fork 10 as a unit, the output shaft feedback gear 13 moves in synchronization with the fork 10 and the output shaft 11.

The end feedback switching gear 3 is meshed with the output shaft feedback gear 13. The tail end feedback switching gear 3 is fixedly arranged on the feedback rotating shaft 15; and the feedback rotary shaft 15 is rotatably mounted on the body 2 through a second bearing 17, as shown in fig. 3.

Further, the axis of the feedback rotary shaft 15 is parallel to the axis of the output shaft 11.

When the output shaft 11 drives the rudder wing 18 to deflect, the output shaft feedback gear 13 can simultaneously drive the tail end feedback switching gear 3 to rotate. By monitoring the deflection angle of the tail end feedback switching gear 3, the deflection angle of the output shaft 11 can be indirectly obtained, and then the rotation angle of the rudder wing 18 can be monitored.

The potentiometer 8 is used for monitoring the deflection angle of the tail end feedback transfer gear 3; the controller assembly 4 is used for receiving the angle information monitored by the potentiometer 8 and controlling the driving motor 1.

It is worth noting that: the potentiometer 8 can be replaced by an angle sensor, and the deflection angle of the tail end feedback switching gear 3 can be monitored and fed back.

In a specific embodiment of the present invention, the controller component 4 of the electric servo rotary steering engine is configured to receive the angle information collected by the potentiometer 8, and control the rotation speed and the rotation direction (forward/reverse) of the driving motor 1 and the angular displacement output by the driving motor 1 through the controller component 4. The controller component 4 receives a driving signal transmitted by the upper computer, and then controls the driving motor 1 to unlock and drive the rudder wing 18.

When in implementation:

as shown in fig. 1 and 2: after an upper computer signal enters the controller component 4 for operation processing, the driving motor 1 drives the motor gear 14 on the output shaft of the driving motor to rotate in a servo mode, and the motor gear 14 is meshed with the transmission gear 6-1 to drive the transmission gear 6-1 to rotate.

As shown in fig. 5: when the transmission gear 6-1 of the screw rod assembly 6 rotates, the trapezoid screw rod nut 6-2 is driven to rotate at first, and at the moment, the ball screw 6-6 and the trapezoid screw rod 6-8 are not connected through the push pin 6-5, so that only the trapezoid screw rod 6-8 moves linearly.

As shown in fig. 6 and 7: a rudder locking hole 5-9 is arranged on the cylindrical surface of the rudder locking pin 5-7, and the rudder locking hole 5-9 is matched with the cylindrical section at the tail part of the trapezoidal screw rod 6-8. The trapezoidal screw rods 6-8 move linearly until the trapezoidal screw rods move out of the rudder locking holes 5-9 on the rudder locking pins 5-7, and the lower cover assembly 5 is unlocked.

In the process of linear motion of the trapezoidal screw rod 6-8, when the trapezoidal screw rod 6-8 rises, the cylindrical section at the tail of the trapezoidal screw rod 6-8 is gradually separated from the rudder locking hole 5-9 of the rudder locking pin 5-7, and after the cylindrical section is completely separated, the rudder locking pin 5-7 starts to move under the thrust action of the second spring 5-6 and is separated from the rudder locking pin 5-2 until the cylindrical section is contacted with the adjusting cushion block 5-8 to stop moving. After the rudder locking pin 5-7 is separated from the rudder locking rod 5-2, the rudder locking rod 5-2 drives the rudder locking plate 5-4 to start linear motion to move downwards under the thrust action of the first spring 5-5 until the rudder locking plate 5-4 and the rudder locking plate 5-4 unlock the rudder wing 18.

Further, after the rudder wing 18 is unlocked, the push pin 6-5 is smoothly connected with the ball screw 6-6 and the trapezoidal screw 6-8 into a moving whole by means of the thrust of the third spring 6-4, and then the rotating motion of the external input screw assembly 6 can drive the ball screw 6-6 to rotate so as to realize the servo motion of the output shaft 11.

After the ball screw 6-6 and the trapezoidal screw 6-8 form a moving whole, the transmission gear 6-1 drives the ball screw 6-6 to rotate, and further drives the output shaft 11 to deflect through the structure of the shifting fork 10, and the output shaft 11 is connected with the rudder wing 18, so that the servo deflection of the rudder wing 18 is realized.

As shown in fig. 2 and 3, the deflection of the shifting fork 10 drives the terminal feedback switching gear 3 to rotate, and the terminal feedback switching gear 3 is rigidly connected with the potentiometer 8, so that the deflection angle feedback of the output shaft is realized. The feedback signal is returned to the controller assembly 4 for signal processing.

Further, the upper computer judges whether the rudder wing 18 deflects in place according to the feedback result of the potentiometer 8; if so, the driving motor 1 is kept still, otherwise, an adjusting instruction is transferred to the controller assembly 4, the driving motor 1 is controlled to rotate through the controller assembly 4, and the deflection angle of the rudder wing 18 relative to the machine body 2 is adjusted.

Specifically, the yaw direction of the rudder wing 18 is controlled by controlling the rotational direction of the drive motor 1. Further, the rotation angle of the rudder wing 18 is controlled by controlling the magnitude of the output angular displacement (number of turns) of the driving motor 1; finally, the angle adjustment of the rudder wing 18 is realized.

It is worth noting that the electric servo rotary steering engine is not reusable, is suitable for driving aircraft equipment for one-time operation, such as a detector, a satellite, a ship-based cruise device and the like, and is also suitable for weaponry and the like. The application of the electric servo rotary steering engine is not used for limiting the protection scope of the invention.

Compared with the prior art, the technical scheme provided by the embodiment has at least one of the following beneficial effects:

1. the electric servo rotary steering engine integrated with the unlocking mechanism realizes the unlocking of the rudder wing through the operation of an integral servo system, and the rudder wing dynamically follows the deflection. The performance index meets the requirements of the original system, the space layout is compact, and the unlocking mechanism driven and controlled by the motor is integrated, so that the locking and unlocking of the rudder wing are realized. And the power for unlocking the rudder wing comes from the driving motor 1 for driving the rudder wing to deflect, so that the rudder wing is unlocked without additional power.

2. The electric servo rotary steering engine with the integrated unlocking mechanism adopts a matching mode of the screw rod assembly 6 and the shifting fork 10, realizes the rotary driving of the rudder wing 18, is provided with the output feedback assembly, monitors the deflection angle of the output shaft 11 through the tail end feedback switching gear 3 and the potentiometer 8, can monitor and adjust the deflection angle of the rudder wing in real time, and improves the control precision of the steering engine.

3. The electric servo rotary steering engine integrated with the unlocking mechanism has compact system layout and can meet various space use requirements. By integrating the potentiometer 8 (or the angle sensor), the motion precision and the servo performance of the whole mechanism are improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims (10)

1. The utility model provides an integrated unlocking mechanism's electronic servo rotary steering engine which characterized in that includes: the device comprises a driving motor (1), a machine body (2), a screw rod assembly (6), a shifting fork (10) and an output shaft (11);

the driving motor (1) is fixedly arranged above the machine body (2); the driving motor (1) can drive the shifting fork (10) to deflect through the screw rod assembly (6);

the output shaft (11) is rotatably arranged on the machine body (2), and the shifting fork (10) is fixedly connected with the output shaft (11); when the shifting fork (10) deflects, the output shaft (11) rotates relative to the machine body (2);

and two ends of the output shaft (11) are respectively connected with two rudder wings (18).

2. The electric servo rotary actuator of integrated unlocking mechanism according to claim 1, characterized in that the screw assembly (6) comprises: a first lead screw-nut mechanism and a second lead screw-nut mechanism.

3. The electric servo rotary steering engine with an integrated unlocking mechanism according to claim 2, characterized in that the first lead screw-nut mechanism comprises: a ball screw (6-6) and a ball screw nut (6-7);

the second feed screw-nut mechanism comprises: a trapezoidal screw rod (6-8) and a trapezoidal screw rod nut (6-2).

4. The electric servo rotary steering engine with the integrated unlocking mechanism according to claim 3, wherein the trapezoidal screw (6-8) is sleeved inside the ball screw (6-6) and can slide relatively.

5. The electric servo rotary steering engine with the integrated unlocking mechanism according to claim 4, wherein the first lead screw-nut mechanism is used for driving the shifting fork (10) to rotate; the second feed screw nut mechanism is used for locking/unlocking the lower cover assembly (5).

6. The electric servo rotary steering engine with integrated unlocking mechanism according to claim 5, characterized in that the ball screw nut (6-7) is screwed on the outside of the ball screw (6-6) to form a first screw nut pair.

7. The electric servo rotary steering engine with the integrated unlocking mechanism according to claim 6, characterized in that the ball screw nut (6-7) can displace along the axis direction of the ball screw (6-6) when the ball screw (6-6) rotates.

8. The electric servo rotary actuator with an integrated unlocking mechanism according to claim 7, characterized in that the ball screw nut (6-7) can shift the fork (10) to rotate when it is displaced relative to the ball screw (6-6).

9. The electric servo rotary steering engine with the integrated unlocking mechanism according to claim 8, wherein the trapezoidal lead screw nut (6-2) is screwed outside the trapezoidal lead screw (6-8) through a thread to form a second lead screw nut pair.

10. The electric servo rotary steering engine with the integrated unlocking mechanism according to claim 9, wherein when the drive motor (1) drives the trapezoidal lead screw nut (6-2) to rotate, the trapezoidal lead screw (6-8) can displace along the axis direction of the trapezoidal lead screw; when the trapezoid screw rods (6-8) are displaced, the lower cover assembly (5) can be unlocked; the lower cover assembly (5) is used for locking the rudder wing (18).

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