Primary iron core for linear motor

Abstract

The invention relates to a primary iron core for a linear motor. The primary iron core comprises a plurality of strip-shaped magnetic conductive substrates. Each of the magnetic conductive substrates comprises a bottom end and a top end opposite to the bottom end. The magnetic conductive substrates are orderly stacked and are aligned correspondingly such that the end parts of the bottom ends of the multiple magnetic conductive substrates are aligned to each other. The primary iron core also comprises two pressing plates which clamp the multiple magnetic conductive substrates from the stacking direction of the multiple magnetic conductive substrates. The primary iron core also comprises multiple pulling plates which are orderly arranged along the extension directions of the magnetic conductive substrates, each of the pulling plates and the top ends of the magnetic conductive substrates are welded together, wherein the primary iron core is suspended to the mouting base of the primary iron core through the pulling plates. The bottom of the primary iron core of the linear motor is smoother in a suspension state.

Description

technical field [0001] The invention relates to a linear motor technology, in particular to a primary iron core for a linear motor. Background technique [0002] As a new type of transportation, the medium and low-speed maglev train with normal guidance has attracted more and more attention due to its advantages of safety, stability and comfort. Compared with superconducting maglev trains, medium and low speed maglev trains with conventional conduction do not require special materials and special structures to improve system performance. Therefore, medium and low speed maglev trains with conventional conduction have developed rapidly and have been applied in domestic Beijing S1 line and Changsha airport line. [0003] The conventional low-speed maglev train includes a car body, a bogie arranged under the car body and the primary of a linear motor installed on the bogie. The secondary of the linear motor (that is, the reaction plate) is arranged along the track of the normal...

AI Technical Summary

Problems solved by technology

[0007] 2) Limited by the primary weight of the linear motor

[0008] Limited by the suspension capacity of the suspension system, the vehicle requires strict requirements on the primary weight of the linear motor installed on the vehicle body. For this reason, the primary punching sheet of the linear motor is opened for weight reduction, which also makes the primary iron core stiffness of the linear motor change. Difference

[0009] Combining the above two factors, it is determined that in the manufacturing process of the linear motor core, due to the poor structural rigidity, the flatness of the bottom surface of the primary core is difficult to meet the factory requirements

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