CN218177858U

CN218177858U - Servo steering engine

Info

Publication number: CN218177858U
Application number: CN202223167248.6U
Authority: CN
Inventors: 岳振波
Original assignee: Beijing Hangxing Transmission Technology Co ltd
Current assignee: Beijing Hangxing Transmission Technology Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2022-12-30
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a servo steering engine, including input mechanism, drive mechanism, control mechanism and output mechanism, input mechanism is the power input end, and input mechanism's output is connected to the drive mechanism input, and output mechanism's input is connected to the drive mechanism output, and control mechanism sets up in drive mechanism and output mechanism hookup location, and input mechanism is rotary power mechanism, and wherein drive mechanism is the lead screw structure. This technical scheme converts rotary motion into linear motion through ball, the great axial force of exportable, and the rethread rack converts linear motion into gyration swing, further improves bearing capacity. The bearing can reach the output torque of tens of thousands of Nm.

Description

Servo steering engine

Technical Field

The utility model relates to a drive flight control surface's transmission system field especially relates to a servo steering wheel.

Background

Most of existing servo steering engines are harmonic servo steering engines, and the servo steering engines are small in size and light in weight, and an integrated steering engine device is disclosed in a patent with the publication number of CN 114204746A. The integration steering wheel device includes: a housing; the frameless motor comprises a motor stator and a motor rotor, wherein the motor stator is fixed in the shell; harmonic speed reducer ware, including wave generator, steel wheel, output wheel and flexbile gear, the steel wheel is fixed in the casing, the output wheel rotates to be installed in the casing, the flexbile gear overlap in the wave generator outside and simultaneously with steel wheel and output wheel meshing, the output wheel coaxial fixation has the installation axle, the installation axle extends to the inside installation department that forms of electric motor rotor, wave generator with electric motor rotor coaxial links firmly and rotates the suit on the installation axle. The integrated steering engine device provided by the invention achieves the development requirements of miniaturization and light weight of the steering engine through the mutual integration and integrated design of the sensor, the frameless motor, the harmonic reducer and the control and control driving printed board.

When the steering engine outputs load, the main load is mainly borne by the harmonic gear, and because the harmonic reducer is mainly borne by the flexible gear, when the steering engine works, the wave generator is arranged on the inner side of the flexible gear to force the flexible gear to be oval, so that when the steering engine is designed, the flexible gear is of an elastic thin-wall structure, and the structure cannot bear extremely large torque. When the harmonic reducer is used in a servo steering engine, the bearing capacity generally cannot exceed 800 N.m due to the problem of installation space. In application scenes such as ship rudder pieces, heavy rotary machinery and the like, driving torque of tens of thousands of Nm is often needed, and the harmonic servo steering engine is not suitable any more at the moment.

In the existing heavy-duty rotary application scene, a motor is mostly adopted to drive a planetary reducer so as to achieve the required transmission torque. However, the planetary reducer is often large in size and weight, requires a large installation space, and does not meet the application requirements of miniaturization and light weight.

A servo steering engine is needed to solve the above problems according to the above requirements.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve among the prior art servo steering wheel that bears main load by harmonic gear, receive the structural characteristic of harmonic, servo steering wheel bearing capacity generally is no longer than 800 nm. In application scenes such as ship rudder pieces, heavy rotary machinery and the like, driving torque of tens of thousands of newton meters is often required, and the harmonic servo steering engine is not suitable any more at the moment; in the existing heavy-duty rotary application scene, a motor is mostly adopted to drive a planetary reducer so as to achieve the required transmission torque. But planetary reducer is often bulky, and weight is big, needs great installation space, is not conform to the problem of miniaturization, lightweight application demand, the utility model provides a servo steering wheel turns into linear motion with rotary motion through ball, exports great axial force, has solved prior art's problem.

The utility model provides a servo steering engine, which comprises an input mechanism, a transmission mechanism, a control mechanism and an output mechanism, wherein the input mechanism is a power input end, the input end of the transmission mechanism is connected with the output end of the input mechanism, the output end of the transmission mechanism is connected with the input end of the output mechanism, the control mechanism is arranged at the connecting position of the transmission mechanism and the output mechanism, and the input mechanism is a rotary power mechanism;

the transmission mechanism comprises a screw rod shaft, a screw rod nut and a sliding rack, one end of the screw rod shaft is axially connected with the output end of the input mechanism, the screw rod nut is movably arranged on the screw rod shaft, an axial groove is formed in the outer surface of the screw rod nut, the bottom surface of the groove is the outer side surface of a rectangular rotating body taking the axis of the screw rod shaft as a rotating shaft, the sliding rack is axially arranged in the groove of the screw rod nut and is controlled to be in the relative position with the input mechanism through a control mechanism, the length of the sliding rack is smaller than that of the groove of the screw rod nut, and the sliding rack is meshed with the output mechanism.

In order to meet the torque requirement, the screw rod is adopted as a steering engine transmission mechanism in the technical scheme, the mode that the screw rod is combined with a gear rack is adopted, the contact position is met, the strong load capacity is achieved, the torque is sufficient, and the high load capacity can be met in a small space. Meanwhile, a certain movement allowance is arranged at the connecting position of the gear rack and the screw rod nut, so that the swinging mechanism connected with the rudder can be more stable.

A servo steering wheel, as preferred mode, control mechanism is the casing that the side of tube-shape has the fluting, casing one end fixed mounting input mechanism, the female activity of lead screw shaft and lead screw sets up inside the casing, the slip rack sets up in the fluting of side.

A servo steering wheel, as preferred mode, output mechanism includes a pair of gear backup pad, output gear and wabbler mechanism, two gear backup pad symmetries set up in the fluting both sides, two gear backup pads of output gear swing joint, output gear passes the gear backup pad axial fixity of one side and connects wabbler mechanism, output gear and slip rack toothing.

A servo steering wheel, as preferred mode, input mechanism includes driving motor and fixing bearing, driving motor is fixed to be set up in control mechanism's one end, driving motor's output and control mechanism coaxial line, screw shaft is connected to the driving motor output, fixing bearing axial activity sets up in control mechanism inside and nested screw shaft end surface.

The motor is decelerated through two stages of gears, then the ball screw is driven to drive the rack, and the rack drives the gear to output torque outwards.

The utility model discloses beneficial effect as follows:

this technical scheme converts rotary motion into linear motion through ball, the great axial force of exportable, and the rethread rack converts linear motion into gyration swing, further improves bearing capacity. The bearing can reach the output torque of tens of thousands of Nm.

Drawings

FIG. 1 is a schematic top view of a servo steering engine;

FIG. 2 is a schematic sectional view of a servo steering engine transmission mechanism in a front view;

FIG. 3 is a schematic top view of an output mechanism of a servo steering engine;

fig. 4 is a schematic sectional view of a servo steering engine input mechanism in a front view.

Reference numerals:

1. an input mechanism; 11. a drive motor; 12. fixing the bearing; 2. a transmission mechanism; 21. a screw shaft; 22. a screw mandrel; 23. a sliding rack; 3. a control mechanism; 4. an output mechanism; 41. a gear support plate; 42. an output gear; 43. a rocking mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

As shown in fig. 1, a servo steering engine comprises an input mechanism 1, a transmission mechanism 2, a control mechanism 3 and an output mechanism 4, wherein the input mechanism 1 is a power input end, the input end of the transmission mechanism 2 is connected with the output end of the input mechanism 1, the output end of the transmission mechanism 2 is connected with the input end of the output mechanism 4, the control mechanism 3 is arranged at the connecting position of the transmission mechanism 2 and the output mechanism 4, and the input mechanism 1 is a rotary power mechanism;

as shown in fig. 2, the transmission mechanism 2 includes a screw shaft 21, a screw nut 22 and a sliding rack 23, one end of the screw shaft 21 is axially connected to the output end of the input mechanism 1, the screw nut 22 is movably disposed on the screw shaft 21, an axial groove is disposed on the outer surface of the screw nut 22, the bottom surface of the groove is the outer side surface of a rectangular rotating body which takes the axis of the screw shaft 21 as a rotating shaft, the sliding rack 23 is axially disposed in the groove of the screw nut 22 and is controlled by the control mechanism 3 to be opposite to the input mechanism 1, the length of the sliding rack 23 is smaller than that of the groove of the screw nut 22, and the sliding rack 23 is meshed with the output mechanism 4.

The control mechanism 3 is a cylindrical shell with a groove on the side surface, the input mechanism 1 is fixedly installed at one end of the shell, the screw shaft 21 and the screw nut 22 are movably arranged in the shell, and the sliding rack 23 is arranged in the groove on the side surface.

As shown in fig. 3, the output mechanism 4 includes a pair of gear support plates 41, an output gear 42 and a swing mechanism 43, the two gear support plates 41 are symmetrically disposed at two sides of the slot, the output gear 42 is movably connected to the two gear support plates 41, the output gear 42 penetrates through the gear support plate 41 at one side and is axially fixedly connected to the swing mechanism 43, and the output gear 42 is engaged with the sliding rack 23.

As shown in fig. 4, the input mechanism 1 includes a driving motor 11 and a fixed bearing 12, the driving motor 11 is fixedly disposed at one end of the control mechanism 3, an output end of the driving motor 11 is coaxial with the control mechanism 3, an output end of the driving motor 11 is connected to the screw shaft 21, and the fixed bearing 12 is axially movably disposed inside the control mechanism 3 and is nested on an outer surface of an end portion of the screw shaft 21.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A servo steering engine which characterized in that: the device comprises an input mechanism (1), a transmission mechanism (2), a control mechanism (3) and an output mechanism (4), wherein the input mechanism (1) is a power input end, the input end of the transmission mechanism (2) is connected with the output end of the input mechanism (1), the output end of the transmission mechanism (2) is connected with the input end of the output mechanism (4), the control mechanism (3) is arranged at the connecting position of the transmission mechanism (2) and the output mechanism (4), and the input mechanism (1) is a rotary power mechanism;

the transmission mechanism (2) comprises a screw shaft (21), a screw nut (22) and a sliding rack (23), one end of the screw shaft (21) is axially connected with the output end of the input mechanism (1), the screw nut (22) is movably arranged on the screw shaft (21), an axial groove is formed in the outer surface of the screw nut (22), the bottom surface of the groove is the outer side surface of a rectangular rotating body taking the axis of the screw shaft (21) as a rotating shaft, the sliding rack (23) is axially arranged in the groove of the screw nut (22) and is controlled to be in relative position with the input mechanism (1) through the control mechanism (3), the length of the sliding rack (23) is smaller than that of the groove of the screw nut (22), and the sliding rack (23) is meshed with the output mechanism (4).

2. The servo steering engine of claim 1, wherein: the control mechanism (3) is a cylindrical shell with a groove in the side face, one end of the shell is fixedly provided with the input mechanism (1), the screw shaft (21) and the screw nut (22) are movably arranged in the shell, and the sliding rack (23) is arranged in the groove in the side face.

3. The servo steering engine of claim 2, wherein: output mechanism (4) include a pair of gear supporting plate (41), output gear (42) and wabbler mechanism (43), two gear supporting plate (41) symmetry set up in the fluting both sides, output gear (42) swing joint two gear supporting plate (41), output gear (42) pass one side gear supporting plate (41) axial fixed connection wabbler mechanism (43), output gear (42) with slip rack (23) meshing.

4. The servo steering engine of claim 2, wherein: the input mechanism (1) comprises a driving motor (11) and a fixed bearing (12), the driving motor (11) is fixedly arranged at one end of the control mechanism (3), the output end of the driving motor (11) is coaxial with the control mechanism (3), the output end of the driving motor (11) is connected with the screw shaft (21), and the fixed bearing (12) is axially and movably arranged in the control mechanism (3) and is embedded in the outer surface of the end part of the screw shaft (21).