An operating mechanism and a locomotive using the operating mechanism

Abstract

The invention discloses an operating mechanism and a locomotive using the same. The magnets of the operating mechanism are permanent magnets; the permanent magnets are used for acting on a piston through an independent permanent magnetic force or a resultant force of the permanent magnetic force and air pressure in a switching-off cavity when switching on is performed in place, so that the piston can keep abutting against the switching-on end of a main cylinder. After the operating mechanism performs in-place switching on, the permanent magnets can act on the piston through the permanent magnetic force or the resultant force of the permanent magnetic force and air pressure in the switching-off cavity, so that an operating rod can be kept in a switching-on state under the driving of the piston. Compared with a structure in which an electromagnetic force provided by electromagnets is needed when an operating rod is kept in a switching-on state, the operating mechanism of the invention does not need the help of electromagnets when being in the switching-on state, and therefore, problems of instability of a switching-on retention force and high possibility of being burnout of electromagnetic coils which are brought about by continuous power supply of the electromagnetic coils of the electromagnets can be avoided, and the switching-on retention state of the operating mechanism can be stable.

Description

technical field [0001] The invention relates to an operating mechanism and a locomotive using the operating mechanism. Background technique [0002] At present, the operating mechanisms used in high-voltage switches and related fields are mostly spring operating mechanisms and permanent magnet operating mechanisms, but spring operating mechanisms have complex structures, many potential failure points, and low mechanical life, so it is difficult to meet the requirements of long life; permanent magnet operation The structure of the mechanism is simple and the mechanical life is long. However, the permanent magnet operating mechanism needs a large-capacity power supply when it operates. The moving mechanism has certain limitations in the process of use. In locomotive on-board equipment and other special occasions, the operating mechanism is required to have a long life and a small power supply capacity, so the pneumatic operating mechanism is the best choice. The pneumatic mec...

AI Technical Summary

Problems solved by technology

However, in the closing and holding state, the electromagnetic coil of the electromagnet in the operating mechanism needs to be continuously charged to ensure sufficient electromagnetic attraction between the magnet and the piston, and because the electromagnetic coil is inside the outer iron core, the outer iron core will hinder The heat dissipation of the electromagnetic coil, so the heat generation of the continuously charged electromagnetic coil will be larger, which will not only make the magnetism of the electromagnet unstable, but also shorten the service life of the electromagnetic coil when the electromagnetic coil continues to generate heat and cannot dissipate heat in time , or even burned out, so the operating mechanism that uses the electromagnet and permanent magnet to maintain the closed state is prone to unstable closing force during use, resulting in reduced reliability and stability of closing

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