CN217236631U

CN217236631U - Compact type large-torque output steering engine mechanism

Info

Publication number: CN217236631U
Application number: CN202220340231.7U
Authority: CN
Inventors: 曹欢; 张琼; 迟翔; 刘敏; 张建蒙
Original assignee: Beijing Aerospace Jiacheng Precision Technology Development Co ltd
Current assignee: Beijing Aerospace Jiacheng Precision Technology Development Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-08-19
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a compact large-torque output steering engine mechanism, which comprises a steering engine bracket, four sets of motor reducer mechanisms and corresponding steering shafts; the four sets of motor reducer mechanisms are arranged on the steering engine bracket, the input torque rotation axes of the four sets of motor reducer mechanisms are simultaneously vertical to the plane of the steering engine bracket, and the intersection points of the rotation axes and the plane are respectively positioned in four quadrants of a plane horizontal coordinate system and are centrosymmetric; the four sets of motor speed reducer mechanisms output linear motion and drive the rudder shafts to rotate, and the rotation axes of the four rudder shafts are positioned in the same plane and respectively correspond to a positive half shaft and a negative half shaft of a plane coordinate system; the motor reducer mechanism realizes torque output through primary gear transmission, primary ball screw transmission and primary connecting rod transmission. The utility model discloses can realize the big moment of torsion output in the little space.

Description

Compact type large-torque output steering engine mechanism

Technical Field

The utility model belongs to the technical field of guided missile, rocket missile guidance control, concretely relates to high maneuverability steering wheel of characteristics such as simple structure is compact, output torque is big, with low costs, installation and debugging convenience.

Background

Nowadays, the development of military technology in the world enables indirect fire such as rocket projectiles, grenades, mortar projectiles, aviation bombs and the like to form a greater operational threat in the past, the indirect fire has the characteristics of small target, low cost, large quantity, large batch and the like, along with the gradual popularization of an accurate guidance technology, the hitting precision of the indirect fire is continuously improved, and therefore the threat degree is also continuously improved, so that higher requirements are provided for the rocket projectiles for defending and accurately hitting the indirect fire threat.

The air defense guidance intercepting rocket projectile with the diameter of 122mm has the characteristics of small pneumatic resistance of the projectile body, high response speed, stable flight, large intercepting range, high intercepting precision and the like. Due to the characteristics of the projectile body, the following requirements are provided for the steering engine. First, the steering engine must have a fast response speed. Secondly, the high maneuverability of the rocket bomb is required to be large enough, and the increase of the rudder area causes the increase of the hinge moment. The hinge moment of the 122mm air-defense guidance intercepting rocket projectile is 25Nm, which is 4-5 times of the hinge moment of the aiming rocket projectile between the same calibers, and the torque force output by the existing steering engine mechanism cannot meet the use requirement of the air-defense guidance intercepting rocket projectile of the type.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a compact big moment output steering wheel mechanism, this mechanism can realize the big moment of torsion output in the little space.

A compact large-torque output steering engine mechanism comprises a steering engine support, four sets of motor reducer mechanisms and corresponding steering shafts; the four sets of motor reducer mechanisms are arranged on the steering engine support, the input torque rotation axes of the four sets of motor reducer mechanisms are simultaneously vertical to the plane of the steering engine support, and the intersection points of the rotation axes and the plane are respectively positioned in four quadrants of a plane horizontal coordinate system and are centrosymmetric; the four sets of motor speed reducer mechanisms output linear motion and drive the rudder shafts to rotate, and the rotation axes of the four rudder shafts are positioned in the same plane and respectively correspond to a positive half shaft and a negative half shaft of a plane coordinate system; the motor reducer mechanism realizes torque output through primary gear transmission, primary ball screw transmission and primary connecting rod transmission.

Further, the motor reducer mechanism comprises a reducer, a reducer shell, a motor and a ball screw assembly; the speed reducer is characterized in that the speed reducer shell is arranged above the steering engine support, the speed reducer and the roller screw component are arranged in the speed reducer shell, the motor is located below the steering engine support and is connected with the speed reducer, and the output shaft end of the speed reducer and the ball screw component are in gear engagement transmission.

Furthermore, the ball screw assembly comprises a screw, a screw nut, a key, a gearwheel, a shaft sleeve and a pin shaft; one end of the screw rod is fixedly provided with a gearwheel through a key, and the gearwheel is matched with a gear of a speed reducer to realize primary gear transmission; the screw nut is matched with the screw, an open slot is formed in the screw nut, a pin shaft is installed in the open slot, and a shaft sleeve is sleeved on the pin shaft.

Furthermore, the ball screw assembly is installed inside the reducer casing, two ends of the screw are installed inside the reducer casing through angular contact bearings, the screw nut is in sliding fit with the inner surface of the reducer casing, and the screw nut linearly moves inside the reducer casing through rotation of the screw, so that one-level ball screw transmission is achieved.

Furthermore, a shifting fork is arranged on the rudder shaft, and the shifting fork is matched with a shaft sleeve on the lead screw nut in an embedded mode to achieve primary connecting rod transmission.

Has the advantages that:

1. the utility model integrates and installs four sets of motor reducer mechanisms on the steering engine bracket, and the arrangement positions of the input rotation axis and the output rotation axis of the four sets of motor reducer mechanisms can meet the small space installation requirement of the steering engine mechanism; in addition, the motor reducer mechanism is driven by a first-stage gear, a first-stage ball screw and a first-stage connecting rod, so that large torque output in a small space can be realized.

2. The utility model discloses a combination assembly is simple, the debugging is convenient, has increased the interchangeability and the commonality of system. The ball screw adopts a standard component, so that the processing and mounting cost of the speed reducer is reduced. When the motor works, the driving part inside the speed reducer is driven to rotate and move up and down, so that the rudder shaft is driven to rotate around the center of the rudder shaft. The mechanism is simple and compact, small in size, low in cost and high in reliability, and can realize high maneuverability of small-caliber missiles and rocket missiles.

Drawings

FIG. 1 is an overall structure diagram of the steering gear mechanism of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a top view of the present invention;

FIG. 4 is a front view of the speed reducer mechanism of the present invention;

FIG. 5 is a top view of the speed reducer mechanism of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of the reducer mechanism of the present invention;

FIG. 7 is a B-B cross-sectional view of the speed reducer mechanism of the present invention;

fig. 8 is a structural view of the ball screw assembly of the present invention;

fig. 9 is a structural view of the rudder shaft of the present invention.

The device comprises a speed reducer 1, a screw 2, a potentiometer 3, a screw 4, a motor 5, a steering engine support 6, a screw 7, an upper cover 8, a shell 9, a side cover 10, a rudder shaft 11, an angular contact bearing 12, a lead screw 13, a lead screw nut 14, a key 15, a gearwheel 16, a gearwheel 17, a shaft sleeve 18, a pin shaft 19, a stop dog 20, a potentiometer connecting end 20 and a shifting fork 21.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings by way of examples.

As shown in the attached drawings 1-3, the utility model provides a compact large-torque output steering engine mechanism, which comprises four sets of motor reducer mechanisms and corresponding steering shafts 11, wherein the motor reducer mechanisms comprise a reducer 1, a reducer shell 9, a motor 5 and a ball screw component, as shown in the attached drawing 2, the motor 5 is positioned below the steering engine bracket 6, the reducer 1 is positioned above the steering engine bracket 6, the motor 5 is arranged on the reducer 1 through a screw 4, and is meshed with a gearwheel inside the reducer through a pinion at the end of an output shaft; the potentiometer 3 is mounted on the housing 9 of the retarder by means of a screw 2 and engages with the rudder shaft 11 of the retarder.

As shown in fig. 4 and 5, in the motor reducer mechanism, a motor 5 generates input torque of the mechanism, the rotation axis of the input torque is perpendicular to the plane of a steering engine bracket 6, a reducer 1 outputs linear motion and drives a rudder shaft 11 to rotate, the rotation axis of the rudder shaft 11 is parallel to the plane of the steering engine bracket 6, the rotation axes of four rudder shafts of four sets of motor reducer mechanisms respectively correspond to positive and negative half shafts of an XY plane coordinate system, and the intersection points of the rotation axis of the motor and the plane are respectively positioned in four quadrants of the XY plane horizontal coordinate system and are in central symmetry.

As shown in fig. 6 and 7, the speed reducer mechanism includes an upper cover 8, a housing 9, a ball screw assembly, a side cover 10, and a stopper 19;

as shown in fig. 8, the ball screw assembly is composed of an angular contact bearing 12, a screw 13, a screw nut 14, a bull gear 16, a key 15, a pin shaft 18, a shaft sleeve 17 and the like; the bull gear 16 is fixed on the lead screw 13 through a key 15, and the shaft sleeve 17 and the pin shaft 18 are arranged on the lead screw nut 14; the lead screw nut 14 is limited in circumferential rotation by a stopper 19, and the outer diameter of the lead screw nut 14 is fitted to the housing 9 to receive the bending moment applied to the ball screw.

As shown in fig. 9, a shifting fork 21 is integrated on the rudder shaft 11, and a small cylindrical segment is designed at one end of the rudder shaft and serves as a potentiometer connecting end 20 for connecting the potentiometer 3.

When the speed reducer is installed, firstly, the rudder shaft 11 is installed in the speed reducer shell 9, and the rudder shaft is rotated upwards by a certain angle, so that the shaft sleeve 17 in the ball screw assembly is inserted into the shifting fork 21 of the rudder shaft 11, and the ball screw assembly is slowly moved downwards to be installed at the bearing position of the speed reducer shell; then installing a stop block 19 to prevent the ball screw assembly from rotating circumferentially; finally, the upper cover 8 and the side covers 10 are mounted.

The speed reducer in the mechanism adopts primary gear transmission, primary ball screw transmission and primary connecting rod transmission, the transmission ratio is larger than other transmission forms in the same space, and large torque output in a small space can be realized.

In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compact large-torque output steering engine mechanism is characterized by comprising a steering engine support, four sets of motor reducer mechanisms and corresponding steering shafts; the four sets of motor reducer mechanisms are arranged on the steering engine support, the input torque rotation axes of the four sets of motor reducer mechanisms are simultaneously vertical to the plane of the steering engine support, and the intersection points of the rotation axes and the plane are respectively positioned in four quadrants of a plane horizontal coordinate system and are centrosymmetric; the four sets of motor speed reducer mechanisms output linear motion and drive the rudder shafts to rotate, and the rotation axes of the four rudder shafts are positioned in the same plane and respectively correspond to a positive half shaft and a negative half shaft of a plane coordinate system; the motor reducer mechanism realizes torque output through primary gear transmission, primary ball screw transmission and primary connecting rod transmission.

2. The compact large-torque output steering engine mechanism according to claim 1, wherein the motor reducer mechanism includes a reducer, a reducer housing, a motor, and a ball screw assembly; the speed reducer is characterized in that the speed reducer shell is arranged above the steering engine support, the speed reducer and the roller screw component are arranged in the speed reducer shell, the motor is located below the steering engine support and is connected with the speed reducer, and the output shaft end of the speed reducer and the ball screw component are in gear engagement transmission.

3. The compact large-torque output steering engine mechanism of claim 2, wherein the ball screw assembly comprises a screw, a screw nut, a key, a gearwheel, a shaft sleeve and a pin; one end of the screw rod is fixedly provided with a gearwheel through a key, and the gearwheel is matched with a gear of the speed reducer to realize primary gear transmission; the lead screw nut is matched with the lead screw, an open slot is formed in the lead screw nut, a pin shaft is installed in the open slot, and a shaft sleeve is sleeved on the pin shaft.

4. The compact large-torque output steering engine mechanism according to claim 3, wherein the ball screw assembly is mounted inside a reducer housing, two ends of the screw are mounted inside the reducer housing through angular contact bearings, the screw nut is in sliding fit with the inner surface of the reducer housing, and rotation of the screw causes the screw nut to move linearly inside the reducer housing, thereby realizing primary ball screw transmission.

5. The compact large-torque output steering engine mechanism according to claim 4, wherein a shift fork is arranged on the rudder shaft, and the shift fork is in embedded fit with a shaft sleeve on the lead screw nut to realize primary connecting rod transmission.