After the mining scraper winch empty load test, according to the provisions of JB/T7929; filter drying weighing method, the balance error is not more than 5mg.
Measure the manipulation force of the joystick with the force measuring instrument with accuracy not less than 2 levels.
3.1, test requirements
(a) the winch should be positive and negative idle 15min;
(b) the test should be carried out under the rated voltage, the deviation is: ± 5% of the rated voltage.
3.2, underground mining scraper winch idling noise measurement
According to the provisions of GB/T 3768; with an accuracy of not less than ± 1db (A) of the measuring instrument for determination.
4.1, test requirements
(a) winch in the rated load continuous operation for 1h;
(b) the test should be carried out under the rated voltage, the deviation is: ± 5% of the rated voltage.
4.2, the main wire rope tension measurement should not be less than 2 levels of accuracy of the measuring device to measure.
4.3, the underground mining scraper winch input power measurement should be in the rated load and rated speed with an accuracy of not less than 2 level of power test device.
4.4 The wire rope speed check shall be measured by the speed measuring device with an accuracy of not less than 2 levels.
4.5, temperature measurement should be before the test and after the test within 3min, with an accuracy of not less than ± 5% temperature measurement instrument for determination. Before and after the test temperature difference is the temperature rise.
Friction test using a special friction spark test scraper winch for determination.
