The large oil cup is a device used to collect, store, and distribute lubricating oil in the elevator system. It is usually installed near the elevator's traction machine, guide rails, or other parts that need lubrication; it can play a certain buffering role during the operation of the elevator. , reduce the impact and vibration caused by operation; the oil cup provides an appropriate amount of lubricating oil to the key components of the elevator, reducing friction and wear between components, and improving the operating efficiency and life of the elevator.