Non-contact type transmission device with high coaxiality

Abstract

The invention belongs to the technical field of mechanical transmission, and relates to a non-contact type transmission device with high coaxiality. The device is mainly suitable for power transmission occasions with higher coaxial transmission precision requirement, higher transmission stability requirement and higher sealing performance requirement. The device comprises an isolation sleeve, an inner transmission shaft, a small bearing b, a small shaft sleeve, an inner rotor, a permanent magnet A, a reference shaft, a retaining plate, a large bearing b, a bearing cover, a large shaft sleeve, an outer rotor, a mounting plate, a permanent magnet B, a small bearing a and a large bearing b. The device has the advantages that by using the same reference shaft as the reference, the inner rotor, the outer rotor and the isolation sleeve are arranged, so the purpose of improving the transmission coaxiality and the transmission stability of the transmission device is realized, and meanwhile, the processing difficulty is reduced; the outer rotor adopts a tooth-arranged straight groove structure with a rectangular cross section, and the permanent magnet B is fixed by the mounting plate and is embedded in the straight groove structure, so the processing and the disassembly are simple; the coaxiality between an input shaft and an output shaft is high, the resistance moment is small, the sealing performance is reliable, and the non-contact type power transmission with high coaxiality is realized.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission, and specifically relates to a non-contact transmission device with high coaxiality, which is mainly suitable for power transmission occasions with high requirements for coaxial transmission precision, high transmission stability and high sealing performance. . Background technique [0002] At present, the principle of non-contact magnetic transmission has been widely used in magnetic machinery, such as magnetic couplings, magnetic pumps and other related products. The internal non-contact transmission structure is generally composed of inner rotor, outer rotor, permanent magnet and spacer sleeve. And so on, the inner and outer rotors are arranged with an even number of permanent magnets, and the magnetic force system is formed by mutual coupling between the two. However, in the traditional structure of this transmission technology, the installation standards of the main and drive...

AI Technical Summary

Problems solved by technology

However, in the traditional structure of this transmission technology, the installation standards of the main and driven shafts are completely separated, and the coaxial precision of the transmission is low and difficult to control. In high-speed transmission occasions, vibration and unstable transmission torque are prone to occur, such as underwater In the propeller propulsion mechanism of the vehicle, the speed of the propeller is high and the underwater attitude of the vehicle is required to be stable. In such applications, the application of this type of transmission technology is limited.

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