Variable-pressure counterweight self-adjusting elevator

The invention relates to the technical field of elevators, and discloses a variable-pressure counterweight self-adjusting elevator which comprises an elevator shaft and a car, a power mechanism is arranged on the outer wall of the top of the elevator shaft, a bottom plate is fixedly connected to the bottom of the elevator shaft, and two first guide rails and two second guide rails are fixedly connected to the upper surface of the bottom plate; a second sliding plate and a first sliding plate are movably connected to one side of the second guide rail, two connecting plates are fixedly connected between the first sliding plate and the second sliding plate, and a plurality of counterweight blocks are arranged on the upper surface of the second sliding plate and are in sliding connection with the connecting plates. According to the device, attraction force generated by an electromagnet to a counterweight block can be adjusted, the flexibility of the device is improved, meanwhile, the situation that a second slidi