High-power-to-weight-ratio integrated large-load-bearing all-electric rotation actuating device

Abstract

The invention relates to a high-power-to-weight-ratio integrated large-load-bearing all-electric rotation actuating device which comprises an outer cavity, threaded rollers, an inner cavity, a planet gear, a planet carrier, a stator sleeve, a rotor sleeve, a sun gear and the like. The stator cooling fins are mounted at the outer side of the stator sleeve and are used for cooling a motor stator; the motor stator and a permanent magnet are respectively arranged at the inner side of the stator sleeve and the outer side of the rotor sleeve, the motor stator and the permanent magnet form an integrated permanent magnet synchronous motor; the planet gear, the sun gear arranged at the outer side of the rotor sleeve and an outer gear ring arranged at the inner side of the stator sleeve form a planet gear reducer; multiple sections of annular raceways of the outer cavity and the inner cavity are meshed with the zero-lead threads of the threaded rollers to form a high-load-bearing integrated bearing; the outer cavity is installed on the end face of a fixed shell, and the inner cavity is fixedly connected with an output flange, and various sensors are integrated in the device. According to the present invention, the problems that an existing rotary actuating device is large in size and weight are solved, and the integration degree, the power-to-weight ratio and the loading capacity of the all-electric actuating device are improved.

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 ...

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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

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