Structural Design of the Terminal Drainage Device of Mobile Power Generation Vehicle

Aiming at the problems of high temperature rise, insufficient wire diameter adaptability and poor contact stability of the traditional lead wire clamps in the power system, this paper proposes a new type of lead wire clamp design based on the toothed contact structure. Through the introduction of multi-point contact and adaptive clamping mechanism, the contact resistance is significantly reduced and the large current flow capacity is improved. Based on the multi-physics simulation method, a three-dimensional geometric model of the toothed contact structure is established, and the effects of different currents, tooth numbers and wire diameters on the stress distribution and temperature rise are systematically analyzed by combining the solid mechanics and Joule heat modules. The simulation results show that: the stress in the middle tooth position is the largest, with arch-shaped distribution; the increase of on-current and number of teeth leads to the increase of temperature rise; when the on-current is up to 600A, the contact structure with the number of teeth between 20–25 can take into account the high fastening force and low contact resistance; in addition, the tooth contact structure can be adapted to the cables with different wire diameters, and the decrease of the wire diameter leads to the increase of temperature rise, but the contact area and heat dissipation capacity still meet the stable The contact area and heat dissipation capacity still meet the stable operation requirements. The study provides theoretical support for improving the reliability of end-diversion device of power generator, which has important engineering application value.