Connecting device of electromechanical actuator and engine
An electromechanical actuator and connecting device technology, applied in the direction of machine/engine, jet propulsion device, etc., can solve the problems of many gap links and many structural parts, and achieve the effect of less gap, increased 180° reversal, and ingenious structure
Active Publication Date: 2017-02-01
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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Problems solved by technology
The anti-roll structure used in existing products is the form of "cross shaft" and the structure of cross lugs. Although these two schemes can realize the requirements for the degrees of freedom of the lugs required for the thrust vector control of the full-axis swing nozzle, that is, the electromechanical actuation When the actuator swings in pitch and yaw directions, it restricts its freedom of rotation along its own axis, that is, it restricts the roll of the electromechanical actuator caused by the reaction torque generated when the motor rotates, but there are many structural parts. , there are many gaps, and there is no function to prevent 180°reversal
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[0031] The anti-rolling and anti-180° reverse lug structure applied to fast response and linear electromechanical actuators according to the present invention, see figure 1 a to figure 1 c. The lug structure includes the actuator lug 1, the joint bearing 2, the engine lug 3, the pin shaft 4, the nut 5 and the cotter pin 6.
[0032] see Figure 4 a- Figure 4 e, the actuator lug 1 includes a mounting base 1-5, a first lug 1-4, a bearing 2, a first protrusion 1-1, a second protrusion 1-2, a third protrusion 1-7, a Four protrusions 1-8, circular holes 1-3, bosses 1-9 and anti-reversal protrusions 1-10.
[0033] The installation base 1-5 is used to fix the actuator lug 1 to the electromechanical actuator body; the ear piece 1-4 is vertically fixed in the middle of the base, and the ear piece 1-4 has a through hole 1-6 through which Bearing 2 is crimped inside the hole 1-6; the outer ring of bearing 2 is fixedly connected inside the through hole 1-6, and the inner ring of beari...
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The invention relates to a connecting device of an electromechanical actuator and an engine. The connecting device comprises an actuator supporting lug, a knuckle bearing, an engine supporting lug, a pin shaft, a nut and a cotter pin; a first lug piece is perpendicularly fixed to the middle of a base, and is provided with a through hole, and a bearing is arranged in the through hole in a press-joint manner; the front end and the rear end of the through hole are provided with arc protrusions in a bilateral symmetry manner along the surface of the actuator supporting lug, and the protrusions are located on a cylinder; the engine supporting lug is provided with a second lug piece and a third lug piece which are arranged in parallel; the pin shaft sequentially penetrates a through hole of the second lug piece, an inner ring of the bearing and a through hole of the third lug piece. Under the condition that the electromechanical actuator achieves swinging in two directions of pitching and yawing, the freedom degree of rotation around the axis of the actuator is limited; the structure is simple, the weight is small, and the connecting device is suitable for mounting of small and narrow space and particularly suitable for the aerospace industry.
Description
technical field [0001] The invention relates to a connection device between an electromechanical actuator and a motor, belonging to the field of actuators. Background technique [0002] The lug structure is used as the connection mechanism between the electromechanical actuator and the full-axis swing nozzle, and the anti-roll function is a function that the electromechanical actuator must realize. For electromechanical servo-flexible nozzle thrust vector control, under the positive and negative output torque of the electromechanical servo mechanism, the degree of freedom of the rotation of the servo mechanism around its axis must be restricted, which requires the lug structure to prevent the electromechanical actuator from rotating around itself. Axis rotation function. The anti-roll structure used in existing products is the form of "cross shaft" and the structure of cross lugs. Although these two schemes can realize the requirements for the degrees of freedom of the lugs...
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Login to View More IPC IPC(8): F02K1/00
CPCF02K1/002
Inventor 于丹张国林朱大宾刘春庆张巍岳振波
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS