How to Conduct Bucket Elevator Test Run: Key Points to Note

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Bucket Elevator Test Run: Essential Precautions

Precautions for No-Load Test Run of the Bucket Elevator

  1. Pay attention to the operation of the buckets, traction chains, and sprockets. The rotating parts must not collide with or get stuck on other fixed parts. The two chains should run consistently, and the buckets must not be skewed.
  2. Check whether the oil temperature of all bearings is normal (the temperature should not exceed 65° after two hours of operation) and whether the lubrication and sealing are good.
  3. Check for any abnormal noise from the reducer, any oil leakage, whether the coupling is installed reliably, whether the electrical control is normal, and whether the no-load power does not exceed 35% of the rated power.
  4. Carefully observe the backstop device and ensure that the motor's running direction is consistent.
  5. Check whether all fasteners are loose. Pay special attention to the tightening of the bolts fixing the buckets to the chains after stopping.
  6. After the no-load test run is completed and deemed satisfactory, a 16-hour load test run should be conducted:that is, operation under the original designed lifting capacity and the conditions of the lifted material.

Precautions for Load Test Run of the Bucket Elevator

  1. The load test run should be conducted under the original designed conveying capacity and the conditions of the material to be conveyed. First, observe the working condition of the drive unit, whether the current of the electric motor exceeds the rated value under load, whether the electrical control is normal, and the sound characteristics of the reducer, etc.
  2. Check the working conditions of the upper and lower assemblies, whether the running speeds of the two chains are synchronized, and whether the buckets meet the requirements.
  3. Under uniform feeding conditions, pay attention to the characteristics of material supply, and ensure that there is no material accumulation at the bottom of the elevator.
  4. Observe the filling degree of the conveyed material in the buckets, whether there is a phenomenon of one-sided loading, and measure whether the conveying capacity meets the design requirements.
  5. The elevator should be stopped multiple times to check the function of the backstop device, which should ensure that there is no significant reverse movement of the running parts when the elevator stops suddenly.
  6. Only after all the defects found during the load test run have been eliminated and the results are satisfactory, can the elevator be handed over for production.

Bucket Elevator

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