After the overhaul and medium repair of the crusher , the no-load test time is generally 2~6h, and the time can also be determined according to the specific situation. Before the test, if the crane is used to rotate the eccentric shaft for one week, it is determined that there is no resistance before driving. No-load driving should meet the following requirements:
1. Start and stop according to the startup procedure. The interlocking system of the electrical part should meet the maintenance requirements;
2. The fasteners should be firm and free of looseness;
3. The lubrication points are normal and there is no oil leakage;
4, the bearing temperature rise should not exceed 30 ° C;
5. The flywheel rotates smoothly;
6. All adjustment mechanisms are flexible and reach the specified adjustment range.
After the no-load test is passed, the load test should be carried out. Load test time, usually 2 to 3 days and nights. The load test vehicle meets the following requirements:
1. The crusher must not have periodic and significant impact sounds;
2. The bearing temperature rise must not exceed 40 °C;
3. The particle size of the crushed product, that is, the gap of the discharge port should meet the requirements.
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