Supporting plate device for storage battery clamp

The utility model discloses a support plate device for a storage battery clamp, the clamp comprises a plurality of pole group grooves for placing pole groups, the bottoms of the pole group grooves are open, the support plate device comprises a mounting seat, the bottom of the mounting seat is provided with a pull rod mechanism, and the pull rod mechanism is provided with a pull rod. The tow bar mechanism comprises a rotating support table fixed at the bottom of the mounting seat, a supporting block rotationally connected to the rotating support table and an air cylinder for driving the supporting block to rotate; and one end, far away from the rotary support table, of the support block is connected with a support plate for extending into the bottom of the clamp to support a pole group. Relative friction does not exist between the supporting plate and the bottom of the plate group, the quality of the bottom of the plate group is guaranteed, the supporting plate is in surface contact with the bottom of the plat