An all-electric rotary actuation device with high power-to-weight ratio integrated and large load

Abstract

The invention is an all-electric rotary actuating device with high power-to-weight ratio integration and large load, including: outer cavity body, threaded roller, inner cavity body, planetary wheel, planetary carrier, stator sleeve, stator sleeve, sun wheel etc. The stator heat sink is installed outside the stator sleeve to dissipate heat for the motor stator; the motor stator and permanent magnet are respectively installed inside the stator sleeve and outside the rotor sleeve, and the motor stator and permanent magnet form an integrated permanent magnet synchronous motor; planetary gear and installation The sun gear on the outside of the rotor sleeve and the outer ring gear on the inside of the stator sleeve form a planetary gear reducer; the multi-segment annular raceways of the outer cavity and inner cavity mesh with the threaded roller zero-lead thread to form a high-load integrated type Bearing; the outer cavity is installed on the end face of the fixed shell, and the inner cavity is fixedly connected with the output flange; various sensors are integrated inside the device. This invention solves the problems of large volume and weight of the existing rotary actuating device, and improves the integration degree, power-to-weight ratio and load capacity of the all-electric actuating device.

Description

technical field [0001] The invention relates to an all-electric rotary actuating device, in particular to an all-electric rotary actuating device with high power-to-weight ratio integration and large load, and belongs to the technical fields of electromechanical servo technology, aerospace and marine machinery, electronics and control. Background technique [0002] In recent years, the servo actuation system has been developed rapidly. The existing actuation system mainly has two power sources. One is the hydraulic actuation system that uses hydraulic energy as the power, which pushes the load to move through the conversion of high and low pressure oil. This kind of hydraulic servo actuator is suitable for high load conditions, but its volume and weight are large, and there are problems such as oil leakage, inconvenient maintenance, complicated oil circuit and supporting equipment; the other is an all-electric servo actuator that uses electric energy as power. The actuation ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the servo actuation system has been developed rapidly. The existing actuation system mainly has two power sources. One is the hydraulic actuation system that uses hydraulic energy as the power, which pushes the load to move through the conversion of high and low pressure oil. This kind of hydraulic servo actuator is suitable for high load conditions, but its volume and weight are large, and there are problems such as oil leakage, inconvenient maintenance, complicated oil circuit and supporting equipment; the other is an all-electric servo actuator that uses electric energy as power. The actuation system converts electrical energy into mechanical energy, and drives the mechanical transmission mechanism through the motor to push the load to move. This all-electric actuation system belongs to green energy and has the advantages of high safety, high efficiency and easy maintenance. It is used in aerospace Navigation, mechanical engineering, robotic manipulators and other fields

[0003] With the development of science and technology and the development of high-performance equipment, higher requirements are put forward for the performance of all-electric actuators. Large and other shortcomings

Images