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1. The rotary actuator works, and the leg rest mechanism is opened
2. Push the backrest cylinder back, press down the backrest, and at the same time make the leg rest rise
3. The backrest cylinder is retracted and the backrest is pulled back to the initial position
4. The leg rest cylinder is actuated, simulating the leg action to return the leg rest to its original position
5. Repeat the above actions to perform cyclic work to test the life of the iron frame
1. The rotary actuator works, and the leg rest mechanism is opened
2. Push the backrest cylinder back, press down the backrest, and at the same time make the leg rest rise
3. The backrest cylinder is retracted and the backrest is pulled back to the initial position
4. The leg rest cylinder is actuated, simulating the leg action to return the leg rest to its original position
5. Repeat the above actions to perform cyclic work to test the life of the iron frame
