Hydraulic elevator is a common type of household elevator widely used in buildings such as villas and self built houses. It adopts a traction drive principle similar to large commercial elevators, connecting the car and counterweight device through steel wire ropes or steel strips. The running track of the elevator is distributed on both sides of the car, making the car evenly stressed and running smoothly. Due to the inclusion of counterweight devices in its structural design, the Hydraulic elevator has low energy consumption and fast speed during operation.