Constant-pressure secondary water supply equipment for high-rise building

The utility model discloses a high-rise building constant-pressure secondary water supply device in the technical field of constant-pressure water supply, which comprises a shell, a ladder arranged on one side of the shell, a guardrail arranged on the outer side of the upper surface of the shell, a placing hole arranged on the upper surface of the shell, a cleaning device arranged in the placing hole, and an upper mounting cavity, a lead screw, a nut and a cleaning brush, a motor and a power source are arranged in the upper mounting cavity, the motor is connected with a lead screw, the lead screw is in threaded connection with a nut, the nut is connected with a cleaning brush, and an upper pressure sensor and a lower pressure sensor are mounted on the upper surface and the lower surface of the cleaning brush respectively. A top cover is mounted at the top of the upper mounting cavity, a circular baffle larger than the containing hole is arranged on the outer side of the top cover, a handle is arranged on the