CN217275837U

CN217275837U - Transmission device of miniature steering engine

Info

Publication number: CN217275837U
Application number: CN202220214061.8U
Authority: CN
Inventors: 李明; 孙宏宇
Original assignee: Xi'an Raytheon Defense Technology Co ltd
Current assignee: Xi'an Raytheon Defense Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-08-23
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a transmission of miniature steering wheel, include: the rudder shaft assembly comprises a shell, at least one first transmission assembly and at least one rudder shaft assembly, wherein the first transmission assembly is installed inside the shell along a direction parallel to a central axis of the shell, and comprises a motor, a planetary speed reducing mechanism and a worm; the at least one rudder shaft assembly is uniformly arranged in the shell along the direction vertical to the central axis of the shell, and a worm wheel is arranged on the rudder shaft assembly; the worm of the first transmission assembly is vertically meshed with the worm wheel of the rudder shaft assembly; the motor and the planetary reduction mechanism are arranged at the meshing center of the worm wheel corresponding to the rudder shaft assembly. The utility model discloses a transmission of miniature steering wheel has compact structure, and the drive ratio is big, integrates structural design's characteristics.

Description

Transmission device of miniature steering engine

Technical Field

The utility model belongs to the technical field of the steering wheel transmission, concretely relates to miniature steering wheel transmission and anti high steering wheel technique of transshipping.

Background

In order to meet the requirement of modern war and improve the cost-effectiveness ratio of war, the transformation and upgrade of conventional ammunition are vigorously carried out at home and abroad so as to improve the range and precision of ammunition. The steering engine is used as an actuating mechanism for accurately guiding ammunition, and in order to fully exert the flight capability of the micro missile, the structural mass of the steering engine for controlling the flying posture of the cannonball of the controller is reduced as much as possible. The mounting space of the missile-mounted steering engine is limited, and the steering engine is required to realize one-missile and two-rudder integration by using the diameter of the missile as a steering engine system. As the missile is a disposable product, the usage amount is large, and the missile cannot be discharged automatically once the mechanism fails, so that the steering engine is required to have low cost and high reliability. Small tactical missiles are often adopted in modern military individual combat striking. The missile is gradually miniaturized and miniaturized, so that the volume of a steering engine must be light, simple and practical, the volume of a steering engine transmission mechanism also inevitably requires miniaturization and miniaturization, and meanwhile, the requirement on higher strength is ensured, and the large overload condition during launching is met.

The steering engine transmission mechanism produced in China at present is realized by adopting a gear transmission mechanism or a harmonic gear transmission mechanism, and the components have large volume, complex structure, high price and easy failure, so that the design difficulty and the manufacturing cost of the steering engine in integration, miniaturization and light weight are increased. Therefore, according to the miniaturization requirement of the novel miniature missile steering engine, the problem to be solved urgently is to design a miniature steering engine transmission mechanism.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of above-mentioned prior art, the utility model aims at providing a transmission of miniature steering wheel to satisfy miniature steering wheel small size, high overloaded needs have solved the problem that miniature steering wheel is difficult to accomplish small size and high overload and satisfies the designing requirement simultaneously, have compact structure, and the drive ratio is big, integrates structural design's characteristics.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a transmission device of a miniature steering engine comprises: the rudder shaft assembly comprises a shell, at least one first transmission assembly and at least one rudder shaft assembly, wherein the first transmission assembly is installed inside the shell along a direction parallel to a central axis of the shell, and comprises a motor, a planetary speed reducing mechanism and a worm; the at least one rudder shaft assembly is uniformly arranged in the shell along the direction vertical to the central axis of the shell, and a worm wheel is arranged on the rudder shaft assembly; the worm of the first transmission assembly is vertically meshed with the worm wheel of the rudder shaft assembly; the motor and the planetary reduction mechanism are arranged at the meshing center of the worm wheel corresponding to the rudder shaft assembly.

Further, the motor is connected with an input shaft of the planetary reduction mechanism, and the worm is connected with an output shaft of the planetary reduction mechanism.

Further, the worm wheel and the rudder shaft assembly are integrally machined.

Further, the worm of the first transmission assembly and the worm wheel of the rudder shaft assembly are provided with adjusting gaps for controlling meshing gaps of the worm wheel and the worm.

Further, the number of the at least one first transmission assembly and the number of the at least one rudder shaft assembly are the same, and the at least one first transmission assembly and the at least one rudder shaft assembly are arranged in pairs.

Drawings

Fig. 1 is a schematic structural diagram of a transmission device of the micro steering engine of the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the following detailed description of the present invention will be made with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a transmission device of a micro steering engine, including: the steering mechanism comprises a shell 4, at least one first transmission assembly and at least one steering shaft assembly 5, wherein the first transmission assembly is installed inside the shell 4 along a direction parallel to a central axis of the shell 4 and comprises a motor 1, a planetary speed reducing mechanism 2 and a worm 3; the at least one rudder shaft assembly is uniformly arranged in the shell 4 along the direction vertical to the central axis of the shell 4, and a worm wheel is arranged on the rudder shaft assembly 5; the worm 3 and a worm wheel of the rudder shaft assembly 5 are vertically meshed with each other; the motor 1 and the planetary reduction mechanism 2 are installed at the meshing center of the worm wheel of the corresponding rudder shaft assembly 5.

In the present embodiment, the motor 1 is connected to an input shaft of the planetary reduction mechanism 2, and the worm 3 is connected to an output shaft of the planetary reduction mechanism 2. In addition, the worm wheel of the rudder shaft assembly 5 and the rudder shaft assembly are integrally formed.

In this embodiment, the worm of the first transmission assembly and the worm wheel of the rudder shaft assembly are provided with an adjustment gap for controlling a meshing gap of the worm wheel and the worm.

The at least one first transmission assembly and the at least one rudder shaft assembly 5 are the same in number and are arranged in pairs. In the present embodiment, 2 first transmission assemblies and 2 rudder shaft assemblies 5 are selected, and those skilled in the art can select other numbers of first transmission assemblies and one rudder shaft assembly 5 according to actual needs, and the selection is not limited specifically here.

In the present embodiment, the housing 4 is used to support and mount the motor 1, the planetary reduction mechanism 2, the worm 3, and the rudder shaft assembly 5. The housing 4 is provided with a hole for installing the rudder shaft assembly, the hole is matched with the rudder shaft to form clearance fit, the rudder shaft can be ensured to smoothly rotate, the worm wheel and the rudder shaft assembly 5 are integrally processed, and when the worm wheel rotates, the rudder shaft is driven to rotate. The motor 1, the planetary reduction mechanism 2 and the worm 3 are installed on the meshing center position of the worm gear through screws, and the movement of the motor through the planetary reduction mechanism can be transmitted to the worm gear reduction pair. Because the worm gear has self-locking performance, the movement can only be transmitted to the rudder shaft end from the motor end in one direction, but not from the reverse direction.

The utility model discloses a theory of operation is: the motor 1 is used for generating driving force, the driving force generated by the motor 1 passes through the planetary reduction mechanism 2 and drives the planetary reduction mechanism 2 to reduce the speed and transmit the motion to the worm 3, and the worm 3 and a worm wheel on the rudder shaft assembly 5 form a worm and gear reduction pair and drive the rudder shaft to rotate. Because the worm gear has self-locking performance, the movement can be transmitted to the rudder shaft assembly 5 end from the motor 1 end in one direction, and the movement cannot be transmitted in the reverse direction.

The utility model provides a pair of transmission of miniature steering wheel, motor 1 and planetary reduction mechanism 2 form first order decelerator, transmit the rotary motion of motor to installing at the 2 epaxial worms that export of planetary reduction mechanism, and rudder axle subassembly 5 and worm wheel 3 are installed on the support of casing, can guarantee through predetermineeing the mounting hole position on the support that worm gear worm is vice to be in correct meshing position. The worm wheel of the rudder shaft assembly 5 and the rudder shaft assembly are integrally processed to form the rudder shaft assembly, the hole and shaft matching can be formed by surrounding the mounting hole of the support with the outer circle of the rudder shaft, the rotation of the rudder shaft is ensured, the mutually meshed worm and gear form a second-stage speed reducing mechanism, and the requirement of the total speed reducing ratio is jointly completed by the second-stage speed reducing mechanism and the first-stage planetary speed reducing mechanism. When the motor rotates, the first-stage speed reduction is carried out through the planetary speed reducing mechanism 2, and the second-stage speed reduction is carried out through the worm and gear, so that the rotary motion of the rudder shaft is ensured. Above-mentioned miniature steering wheel drive mechanism adopts the miniaturization, the structural design technique integrates, collect two rudder transmission function in an organic whole, adopt simple and convenient mechanism to design, compact structure, occupation space is little, high to the space utilization of steering wheel, drive mechanism has satisfied the little volume function demand of miniaturized steering wheel drive mechanism, has solved the miniaturized, miniaturized requirement of steering wheel drive mechanism, has guaranteed higher intensity requirement simultaneously, big overload condition when satisfying the missile transmission, has very high practicality.

While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A transmission device of a micro steering engine comprises a shell, at least one first transmission component and at least one rudder shaft component, wherein,

the first transmission assembly is arranged inside the shell along a direction parallel to the central axis of the shell, and comprises a motor, a planetary reduction mechanism and a worm;

the at least one rudder shaft assembly is uniformly arranged in the shell along the direction vertical to the central axis of the shell, and a worm wheel is arranged on the rudder shaft assembly;

the worm of the first transmission assembly is vertically meshed with the worm wheel of the rudder shaft assembly;

the motor and the planetary reduction mechanism are arranged at the meshing center of the worm wheel corresponding to the rudder shaft assembly.

2. The transmission device of a micro steering engine according to claim 1,

the motor is connected with an input shaft of the planetary reduction mechanism, and the worm is connected with an output shaft of the planetary reduction mechanism.

3. The transmission device of a micro steering engine according to claim 1 or 2,

the worm wheel and the rudder shaft assembly are integrally processed.

4. The transmission device of a micro steering engine according to claim 1 or 2,

the number of the at least one first transmission assembly and the number of the at least one rudder shaft assembly are the same, and the at least one first transmission assembly and the at least one rudder shaft assembly are arranged in pairs.