Abstract: A quick detachable and installable cat tree floor plate structure which includes amounting post, a floor plate body and a locking part for quick detachment. The mounting post is provided with a mounting boss. The locking part has a locking position and a detachable position and is in sliding fit with the floor plate body to allow the locking part to reciprocate between the locking position and the detachable position. When the locking part is located in the locking position, a snapping groove that is laterally opened is formed between the floor plate body and the locking part for quick detachment to snap the mounting boss into the snapping groove. When the locking part is located in the detachable position, the floor plate body is movable upward relative to the mounting boss and detachable from the mounting boss.

Abstract: A jacking machine includes a main body, a support leg, a ball screw assembly, a power device, a braking device, and a self-locking device. The self-locking device includes: a chainring surrounding and fixedly connected to the screw rod, a toothed claw corresponding to the chainring and rotatably connected to a side of the main body, a first elastic member providing force to the toothed claw, and an electric actuator. A control method thereof includes after receiving a jack-up command, controlling the braking device to leave a braking state, and controlling the toothed claw to switch to a disengaged state, controlling the power device to drive the support leg and the main body to move relatively, and after receiving a stop command, controlling the braking device to enter the braking state, and controlling the toothed claw to switch to an engaged state.