Four-shaft combined precise drive steering engine device

Abstract

The invention relates to a four-shaft combined precise drive steering engine device which comprises motor driving systems, rudder shaft driving units and a steering engine main body structure, wherein the steering engine main body structure is used for connecting the steering engine device to the interior of a portable guided missile main body; totally four sets of motor driving systems are uniformly distributed along the peripheral direction; the output end of each set of motor driving system is connected with a worm; totally four sets of rudder shaft driving units are arranged, and each set comprises a worm, a worm gear and a rudder shaft; the worms drive the worm gears to rotate under the drive of the motor driving systems; and the worm gears drive the rudder shafts to rotate by virtue of bearings arranged therein. The steering engine main body is integrally processed, the device structure is simple, each component is convenient to dismount and maintain, the whole device has the outer diameter of less than 60mm, can be fixedly connected with the portable guided missile or rocket gun main body, has the inner diameter of more than 15mm and can be used for wiring of various communication lines. Meanwhile, the total weight of the whole device is less than 1kg, and the weight proportion of the device is reduced in the weight of the portable guided missile.

Description

technical field [0001] The invention relates to a four-axis combination precision-driven steering gear device, which belongs to the field of electric steering gear structure design. Background technique [0002] As the control device of precision guided weapons, the electric steering gear receives the rudder deflection angle command issued by the onboard computer or autopilot, overcomes the hinge moment of the rudder surface and performs fast angular position tracking, thereby changing the flight attitude and flight trajectory of the guided weapon. To achieve the expected launch effect. For portable missiles or arrow guns, the narrow internal space poses a challenge to the structural design of the electric steering gear, especially for the precise drive control of the four canards or tail fins. Designing an electric steering gear in a portable missile or arrow launcher needs to consider many factors, such as the size and weight of the steering gear, the rudder deflection an...

AI Technical Summary

Problems solved by technology

[0003] As the demand for portable missiles or arrows in modern warfare becomes more and more urgent, the performance requirements of portable missiles or arrows are also continuously strengthened. The higher the deflection accuracy of the wing is, the more complex the attitude is, the more the deflection angle of the rudder or the wing is required; in addition, the portable missile or rocket launcher needs to cope with various complex temperature environments without affecting its performance. Structural design and layout of machine installations pose great challenges

However, traditional steering gears such as hydraulic and pneumatic steering gears have complex structures, large volumes, and high maintenance costs, and are not suitable for portable missiles. In addition, the screw-nut drive, in order to prevent the rudder deflection angle error caused by the rotation of the nut, It needs to be used with miniature linear guide rails, and the friction gap between the nut and the shift fork also needs to be constantly adjusted, which has a great impact on the return gap of the entire device. The most important thing is that the screw-nut transmission can provide the rudder deflection angle of the rudder shaft The angle range cannot be too large, which limits the control range of the portable missile to the flight attitude

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