Equal rigid arm speed locking seismic isolation bearing

The invention relates to an equal rigid arm speed locking seismic isolation bearing which perfectly unifies the temperature displacement and seismic isolation function and also achieves the miniaturization requirement on the premise of guaranteeing the isolation effect. The technical scheme adopted by the equal rigid arm speed locking seismic isolation bearing includes a top seat board, an equal rigid arm, a shock transmission unit and a connecting seat. The top seat board is arranged at a steel basin. A sliding plate and a longitudinal guide are placed between the top seat board and the bottom seat plate. A ball concave plate welding is arranged at the bottom seat plate. The connecting seat is arranged at the right angle inside of the top seat board. The shell of the shock transmission unit is arranged at the top seat board. The end of a piston rod extending at both ends of the shell of the shock transmission unit is provided with a connecting block which is provided with a trapezoid tooth. The trapezoid too