Every theater is a public place with a large number of people, so safety issues must be taken into account in the design of the stage. According to relevant national regulations, in order to prevent accidents caused by the crushing of the elevator or improper operation by the driver, the elevator should be equipped with the following necessary safety devices to ensure that the elevator car can stop ascending or descending in a timely manner.

1. Brake. A brake that controls the starting and stopping of the traction machine part of the elevator

2. Limit switch. An assembly that restricts the car from operating when it reaches the high or low position; such as the limit switch control.

3. Overtravel switch. When the car travels to the high or low position, it will assume the role of ascending or descending. To prevent the car from hitting the ceiling or sinking to the bottom, the stage equipment should be equipped with an overtravel switch that can cut off the power supply and cannot be automatically reset. It should be installed inside the machine room, not in the hoistway. A buffer that can absorb the energy of the moving mechanism and reduce impact should be installed.

4. Buffer. To absorb the energy during the car's collision with the ceiling or floor. Rubber or sponge is removed from the contact area between the buffer and the car to increase its impact energy; sudden car fall accidents caused by rope groove slippage, etc

5. Safety gear. To prevent the sudden drop of the car due to the breakage of the hoisting wire rope, a safety gear that can simultaneously cut off the control power supply and stop the car from falling should be installed on the car. Cars without safety gear are not allowed to carry or transport people. For simple lifts, safety devices (such as safety stop pins) should be installed to prevent the car from suddenly falling when people are loading or unloading goods inside. For lifts that carry or transport people on floors above the third floor (including the third floor)

6. Speed limiter. To prevent the traveling speed from exceeding the normal rate, a speed controller should be installed (not required for buildings with two or fewer floors). This mechanism is integrated with the safety gear; safety doors should be installed at the entrance and exit of the passenger cabin. Lifts used in public places, family dormitories, and areas with flammable and explosive materials

7. Safety door for stage equipment. To prevent personnel from extending their heads, hands, and feet out of the shaft and objects from falling down the shaft, the shaft door should be enclosed, the car door should be fully closed, and the height of the shaft (landing door) should not be less than 1.8 meters. Electric door switches should be installed on the shaft door and the passenger car door

8. Electric door switch. To prevent accidents caused by unclosed shaft doors, passenger car doors, and car roof doors, door interlocks should be installed on the shaft doors and passenger car doors (for doors exceeding two).

9. Safety grounding device. To prevent damage to electrical equipment, safety grounding devices should be installed on the metal casings of electrical equipment and the metal structures of lifts. The grounding wire should be controlled by multiple wires, and the neutral wire should not be arbitrarily used as a safety grounding wire. The grounding resistance should not exceed 4 ohms; the control power supply of the lift can be cut off.

10. Speed limit wire rope switch. When the speed limit wire rope trips or breaks, it prevents the elevator from starting.